Anime News Network·Japan·Friday, September 18, 2026 at 02:00 PM

Five Anime Based on Adult Games You Should Watch

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Many underestimate just how impactful adult content is on anime. A lot of beloved creators get their start working on doujinshi or some type of erotic media before they're able to get their own passion projects off the ground. Many anime are directly adapted from adult manga or video games. Eroge, or adult video games, are a thriving business in Japan, with many having anime adaptations. While some of those adaptations directly translate the sex and adult eroticism from one medium to another, others get a little bit creative. Some of these eroge have compelling stories and worlds to explore, with anime adaptations that keep the focus on those rather than titillation. It would be fun to go over my top five picks for anime that are based on erotic video games.

Fate/stay night: Heaven's Feel

The Fate franchise is so large and ever-expanding that I wouldn't be surprised if a lot of people didn't know that one of the first ever installments was an eroge. In fact, the original Fate/stay night visual novel has quite a few sex scenes that play a major role in the world's magic system. Fate/stay night offered three main routes that have the main character Shiro become emotionally tied to a specific girl depending on the choices that you make. They tell the story of the Holy Grail War, where mages summon spirits based on mythical figures, and all three of those routes have been adapted into anime in some way. The Studio DEEN series adaptation, which came out in 2006, focused on the mascot character Saber. There is the 2014 Unlimited Blade Works anime that focuses on the romantic rival character Rin Tohsaka, and then there is the Heaven's Feel film trilogy that focuses on the tragedy of a character named Sakura Matou.

I appreciate the Heaven's Feel adaptation for not only keeping many of the implied sex scenes, but also making sex a plot point. The main character, Sakura, has a difficult life filled with sexual abuse and manipulation that is not explicitly shown, but is heavily inferred and talked about. While the first two anime adaptations omit any sexual scenes despite being relatively faithful, this route kept the more adult elements of the video game, since removing them would risk diminishing Sakura's story. The film trilogy is a tragic love story about two broken teenagers fighting for each other, even as this horrible magic system makes it impossible for them to live normal lives.

If you have never engaged with the Fate franchise, then I highly recommend it, especially if you are a fan of fantasy stories with expansive worlds. What started as a long, wordy eroge has evolved into one of the most noteworthy Japanese franchises ever, spanning anime adaptations, spinoffs, video games, manga, light novels, and more. I would recommend checking out the three anime adaptations that cover those original routes first, before diving into supplemental material that introduces more characters based on historical or mythological figures. The content is definitely dense, and you might not grasp it right away, but the way that this series recontextualizes history with its magic system is every bit as fun as it is crazy. The action scenes are entertaining, the characters have incredibly strong chemistry, and sometimes it is a lot of fun to see how much crazy lore the franchise keeps building so many years later.

Shuffle!

A lot of eroge stories are harem wish fulfillment where the player is introduced to various girls, and it's just a matter of picking one or two that you want to explicitly focus on. The problem with adapting these games to anime is that it's hard to give a large, extended cast the time and dedication needed to grow attached to them in a meaningful way. What I like about Shuffle! is that it is undoubtedly a harem anime, starting with a rather ridiculous setup where the main character Rin is being courted by multiple impressive girls who are interested in him. However, by the second half, it almost feels like the anime staff decided to lock in and tell a surprisingly compelling drama.

Not only does the main character pick a partner in a believable way, but that's not where the story ends. Some of the characters' actions have fallout and consequences. This anime might have one of the more sympathetic portrayals of the yandere archetype I've seen, with incredibly haunting directing and voice acting. While the series never goes down the route of something like School Days, the trauma and guilt on display are actually very believable. The characters have important conversations and moments of self-reflection that a lot of anime today doesn't even have. What started with cute magical descendants of gods and devils ended with a few broken and scared childhood friends.

Shuffle! feels like a perfect example of a series that recognized how some of the routes and backstories from the original game could make a really engaging animated story. While the series starts in a pretty typical way, the characters develop more layers as Rin's backstory shapes their coping mechanisms. Even intimacy itself gets twisted in some of the more tragic scenes towards the end. The series will sink its fingers into you and make you feel almost scared, but in the best way possible. I'd say this is probably one of the best harem stories I've watched.

White Album 2

I could not tell you how I came across White Album 2, but I can tell you that I walked away from the show with tears in my eyes. Anime is amazing because sometimes that can just happen. This is an anime adaptation of the first part of an adult visual novel sequel. However, despite the fact that there was a White Album 1, White Album 2 doesn't require any backstory and actually stands strong on its own. This anime adaptation almost feels like it shouldn't exist or work, yet here I am telling you why you should watch it.

White Album 2 is a love triangle coming-of-age story. It's about three students who find each other through their love of music, and as the series goes on, it's easy to feel the strong romantic tension between them. Setsuna and Kazusa become really good friends despite their different personalities, and I genuinely believe in the potential romantic connection that these two individually have with the main lead, Haruki, who is a bit more interesting than your typical blank slate protagonist. Of almost any other show I have seen, this anime handles the love-triangle plotline best, even though it's an incredibly difficult trope to pull off believably. What makes this anime excel, despite its rather muted presentation, is that both romantic routes are developed in such a well-balanced way.

I was genuinely blown away that I couldn't tell who Haruki was going to end up with until the very last episode, because most other anime give that away almost immediately. I really respect how these characters internalize their own personal issues, the conversations that they all have with each other regarding what they want out of life, and how they clearly all care so much about each other to the point where they're willing to sacrifice their own emotions for the sake of seeing the others happy. Music is also what draws them together, which leads to some strong set pieces. Once you realize what the anime is doing, it's hard not to be emotionally invested in the joy of seeing these loves blossom alongside the tragedy of a love never getting fulfilled, even if the choices were determined by the smallest margins. I know this is an anime not many people have watched, so please give it a shot, because I assure you it is the kind of story we need to see more of.

ef: a tale of memories

Of all of the shows that I bring up on this list, ef: a tale of memories is probably the most creative. This anime is a loose adaptation of the adult visual novel Ef: A Fairy Tale of the Two, which follows the romantic developments between multiple characters. What makes the anime interesting is that it will bounce back-and-forth between the different romantic developments between the main couples. However, rather than feel like a cluttered mess, ef: a tale of memories does a great job of getting me invested in these surprisingly grounded relationships, further enhanced by the show's presentation.

While the movement of the characters can look a bit janky, I need to give major props to Studio Shaft and director Shin Oonuma for creating a show that still holds up today with its unique storyboarding and visual setpieces. There were moments in this anime that felt like they belonged in Kingdom Hearts, with the use of on-screen text to portray scattered thoughts or heavy shadows to create a sense of contrast with the backgrounds. Unlike a lot of other Studio Shaft shows that tend to go for style over substance, Oonuma uses a lot of the distinct imagery in order to punctuate the emotional struggles of the characters. Even when the show is playing with a lot of familiar tropes, ef: a tale of memories uses those tropes to touch on very relatable ideas that most people could understand.

This show deals with themes of identity, depression, inferiority complex, and what it means to find your place in the world. The result was a show that made me want to smile for its surprisingly uplifting moments, but also cry because it would often remind me of how broken I used to feel. It also helps that most of the main cast have strong chemistry. While there are some hyperspecific setups for these interactions, I found the dialogue between most of these characters surprisingly realistic. These teenagers feel like teenagers with moments of insight and immaturity that never veer into being frustrating. I greatly enjoyed this show when it first aired, and I was thrilled to find out that it is every bit as interesting so many years later.

Rumbling Hearts

Sometimes I want to make fun of my mom for how much she loves soap operas and really contrived dramas. But then I remember how much I loved Rumbling Hearts and immediately shut myself up. Rumbling Hearts is an anime adaptation of an adult video game called Kimi ga Nozomu Eien, which loosely translates to The Eternity You Desire. It is a love-triangle story that throws the audience into a tragic situation by the end of episode one, telegraphing that this show won't end happily. Two high school sweethearts named Takayuki and Haruka are about to go out on their first date, only for the innocent Haruka to get caught in a tragic accident because Takayuki was late. This leads to Haruka falling into a coma. Takayuki is distraught, and roughly three years pass. Everyone is an adult now, and Takayuki has seemingly moved on with a mutual friend of theirs named Mitsuki, but new tragedy strikes in the form of a miracle when Haruka finally wakes up from her coma with a type of hyper-specific amnesia where she still thinks that they are all back in high school, and so everybody needs to play along.

Does that sound a little bit contrived? Yes, but I would be lying if I said I wasn't drawn to all of the painful choices that are set up. Takayuki needs to pretend like the past three years of his life didn't happen in order to protect Haruka's delicate mental state, and he has to do all this just as he was ready to move on with a completely new relationship in his life. I love how the show humanizes Takayuki because it goes out of its way to show that moving on was actually the healthiest thing he could've done, and yet now all that unresolved trauma is forced out. Mitsuki was Haruka's best friend, and now she has to deal with the guilt that she feels about potentially taking advantage of a tragic situation for the sake of her own happiness. All the while, Haruka has barely any idea what is going on, and seeing her slowly piece together the situation feels like a ticking time bomb ready to explode.

This is an anime where it feels like I understand everyone's decisions, no matter how messy. Almost everybody in this show makes mistakes and is pushed to some kind of emotional breaking point, but it's understandable because the very nature of the show puts everybody in a lose-lose situation. This is far more extreme than a typical love-triangle story because it feels like there are a lot more depressing things at stake for those who don't end up finding happiness amid all this pain. The anime definitely looks a little bit dated, especially with its washed-out color palette, but the writing and voice acting are where this show truly shines. Amid all the transparent tragedy, many of these characters feel like real people who were dealt a very bad hand, and I still can't pull my eyes away so many years later.

Sometimes it's important to watch shows that do invoke that depressing feeling for the sake of that emotional catharsis. Watching a show that creates that impossible situation is enough to make me ask how far I would go for the relationships in my own life, or what I would do in these circumstances. I think in a lot of other shows, subject matter like this would be treated with a lot less sincerity. But it's the fact that everything is played so straight that elevates this to a series that I can wholeheartedly recommend, and to think, this all started with a simple adult game.

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