Kyotaro Ichikawa is a disgruntled loner student who is often reading a murder encyclopedia and learning about human anatomy.

He fantasizes about murdering his popular classmates, with the beautiful class idol, Anna Yamada, being his prime target.

However, when he observes that Anna is rather quirky in her own way, and when she becomes increasingly friendly towards Kyotaro, he gradually warms up to her and they start to become closer and eventually fall in love.

[46] The series is produced by Shin-Ei Animation and directed by Hiroaki Akagi, with scripts written by Jukki Hanada, character designs handled by Masato Katsumata, and music composed by Kensuke Ushio.

[3] It aired from April 2 to June 18, 2023, on the NUMAnimation [ja] programming block on TV Asahi and its affiliates.

TV Anime Boku no Kokoro no Yabai Yatsu Furikaeri Jōei-kai ~Bokura wa Futatabi Atsumatta" event on September 29, 2024.

[57] A spin-off light novel written by Kota Nozomi with illustrations by Sakurai and sune was released under Media Factory's MF Bunko J imprint on September 25, 2024.

Reviewing the first episode, Vrai Kaiser of Anime Feminist described it as mostly "harmless-to-charming school rom-com shenanigans" when Ichikawa's murder fantasies fade away, and said that they would give the series a "cautious wait-and-see" approach, saying it wasn't to their taste, comparing it to the "choppy start" of Teasing Master Takagi-san.

[69] Kaiser also said that after three episodes, their optimism was born out, being accurate and sweet to the age group, but that the show's handling of sex as "hit-or-miss for some audiences.

"[71] However, another post on the site gave the series a "yellow flag" for some early monologues by Ichikawa, arguing they "veer too close to actual violent misogyny".

In a Spring 2023 anime preview guide, James Beckett said that the show's premiere was "irritatingly good" and said his defenses crumbled due to the series' "relentless onslaught of cuteness," calling the series "absurdly freaking cute," but hoped that Kyotaro's pension for murder was toned down, while Rebecca Silverman said the first episode blended good humor with an expected "warm emotional undercurrent" and comedic moments, and praised the plot for being "good enough," while criticizing the character designs.

"[73] Later, MrAJCosplay, in a review on the same site, listed the series as one of their favorite anime in 2023, arguing that the series is a "very simple slice-of-life story," with a satisfying slow-burn romance, with every episode having some importance or dramatic weight, and said they couldn't "wait to see how much further the lovable goofballs will go."