Seinen romancemanga adaptations are few and far between, with most of theromance genre being occupied by shojoor shonen romances. There is an abundance of shonen romances that will satisfy fans; however, they can often include familiar tropes that get tiring for frequent genre viewers. Seinen romance, on the other hand, tends to deal with more mature themes, often subverting common tropes.
From marriage simulations to homelessness and so-called “mature” harems, seinen romance has a lot to offer despite not being extremely common. There is often a focus on relationship growth and atypical dynamics that aren’tseen in shonenor shojo. Therefore, anyone looking to dip their toes intoseinen romance animeshould start with these upcoming shows.
Only TV shows, no movies.
Updated on July 15, 2025 by Mark Sammut:TheSummer 2024 anime seasondoes not really have any seinen romances, except for maybe Why Does Nobody Remember Me in This World? Even then, that anime is primarily action. Consequently, a few older shows have been added that deserve to be mentioned among thebest seinen romance anime.
OK,The 100 Girlfriends Who Really, Really, Really, Really, Really Love Youis a better candidate for the best seinen haremor comedy, but it still qualifies as a romance. Due to an act of god, Rentaro ends up with 100 soulmates, all of whom he must make happy or doom to a tragic existence. The ultimate Chad, Rentaro is fully up to the task, and he sets out to start the definitive harem where every girl wins and every trope is invited.
With such a premise,100 Girlfriendsis obviously a parody, and it is a fantastic one at that. However, the anime also works shockingly well as an over-the-top romance. Part of that success comes down to Rentaro’s unflinching dedication to his soulmates, and he genuinely comes across like someone who is in love with each of these partners (and, due to the god element, he is). More importantly, the girls are charming and personable, allowing them to shine as individuals rather than just waifus to be collected like Pokemon. They even have fun relationships with each other.
Arata is a 27-year-old NEET with nothing going for him. That is until he’s approached by ReLife, a company that promises to pay his living expenses for a year in exchange for him participating in a test. This test, done on those having difficulty with adulthood, involves going back to high school for a year. Will Arata take advantage of his opportunity to remake his adult life? Or will he flounder away this chance?
Starting high school for the second time isn’t as easy as it sounds. Arata feels out of place, like an impostor. From forgetting a pencil on his first day to having his teacher find cigarettes in his bag, this isn’t a typical romantic dramedy. The romance is subtle and comes second place to existential exploration, although the budding romance between Arata and Chizuru is delightful and eventually takes center stage in the final part of the story.
When Rikuo meets a young girl who missed her train, his life changes forever, even if he doesn’t know it yet. Haru Nonaka is a manic-pixie-dream-girl type, with a crow on her shoulder and an aloof attitude. Rikuo has settled for a mediocre life, working at a convenience store, single, and not pursuing his passions.
Together, the two get closer through random meetings on Haru’s schedule, with their age difference being one of two reasons Rikuo is apprehensive about dating her. The other is his long-time crush on Shinako. This romantic drama is a refreshing take on the oftenperilous love triangle trope, with much angst and a few mature conversations, Rikuo’s decision is at least satisfying.
Hanabi is dating Mugi but has feelings for her sensei, Narumi. Mugi is dating Hanabi but has feelings for his teacher, Akane. Together, Hanabi and Mugi satisfy their physical and emotional needs while longing for people they can’t have. If that doesn’t sound complicated enough, Narumi and Akane have feelings for each other, and Hanabi and Mugi spend their time watching their teachers' love blossom. This is an intense romantic drama that shows thecomplicated side of humanity.
Scum’s Wishis rated 16+ on Amazon Prime Video for sexual content, and it earns its rating. Focusing on toxic relationships, this show can get very uncomfortable, especially since none of the characters are particularly likable. However, romance should not always focus on healthy and wholesome dynamics, andScum’s Wishtells an ambitious and novel story.
Ever since her ankle injury, Akira Tachibana has felt out of place in her once comfortable high school life. She longs for something different. To pass the time, Akira works at a local family restaurant which is managed by 45-year-old Masami Kondo. Masami is a little bit clumsy, but he’s always working hard and has a pure heart. Akira finds comfort in this, using it to find happiness in a time when her joy, running track, was taken from her.
This is an unrequited love story about finding inspiration and happiness in different places. While the age gap can put people off at first glance, this one is worth watching despite this element.
When two leading members of rival shinobi clans fall in love, they must hide their relationships from the rest of the world.Basilisk: The Kouga Ninja Scrollsis a Romeo and Juliet-esque story about Oboro and Gennosuke, whose destiny is to die at each other’s hands. This action-packed, romantic drama is full of both romance and excellent fight scenes. Though it came out in 2005, the art and animation are top-notch, making it hold the test of time exceptionally well.
Although this is primarily an action seinen, with much of the story following the various battles between the Kouga and Iga clans, Oboro and Gennosuke’s love story is unforgettable. It is steamy and passionate and has much to offer fans of action and romance alike.
Hotshot and heir to a corporate throne, Kou Ichinomiya is moments away from public indecency as he tries to get his pants back after they were stolen by youths. While at the bridge where his pants are found, Kou meets Nino, a strange woman who is fishing in the area. Kou refuses to be indebted to anyone, but due to a series of unfortunate events, he finds himself in the water needing help from Nino.
As he tries to pay off his debt to Nino, she proposes that the two experience love together in return for her saving his life. Not wanting to owe her anything, Kou tries to assimilate to life under a bridge, surrounded by quirky individuals like Nino. While leaning heavily into comedy,Arakawa Under the Bridgehas a surprisingly effective romance between Nino and Kou, both of whom have their worlds expanded by meeting each other. There is an underlying element of sadness too, as Nino is essentially homeless.
I Can’t Understand What My Husband Is Sayingis a three-minute-long episodic series based on a 4-panel manga series by Coolkyousinnjya. It follows amarried couplewhere one partner is a serious otaku, and the other partner is a non-otaku who is vaguely interested in some manga, anime, and idols. Together they experience otaku culture, largely through the lens of a layperson.
This title is as funny as it is sweet. Kaoru and Hajime love each other a lot and are the perfect pair despite what his fujoshi sister says in her doujinshis. This series features a lot of otaku jargon in it, so fans should prepare to get their otaku dictionaries out.
When two high schoolers are placed together for an assignment thatsimulates marriage, they’re forced to live and spend time together, doing the thing married couples do to accrue points towards their final grade. That’s not all. If they score high enough they have the possibility of switching partners, which Akari and Jiro are more than keen to do.
This opposites-attract romantic comedy is far from a masterpiece, but the fan service and chemistry between Akari and Jiro will keep fans engaged despite the premise. Both characters grow quite a bit throughout the series, particularly Akari; furthermore,More Than A Married Couple, But Not Loversdoes a pretty good job with its secondary characters as well.
Commonly known asOregairu,My Teen Romantic Comedy SNAFUis a rather unique seinen drama. While containing all the makings of a traditional romcom, the anime dives deep into the thought process behind the characters' actions, all the while being fairly subtle.Oregairuis, ultimately, about three closed-off teenagers who become friends and gradually learn to open up.
However, this peaceful normal is threatened by their awareness of a love triangle, with all the characters realizing that their current situation would be changed if they acted upon their emotions. It is an interesting dynamic that is explored well throughout the three seasons.
Oregairucan be a touch divisive, especially the sequels. While the original season leans quite heavily into comedy, the second and (especially) third seasons are almost exclusively dramas with an emphasis on romance. There is nothing wrong with that, but it can be disappointing depending on a viewer’s preferences. Fortunately, Hachiman, Yuki, and Yui are great throughout the series.
