The Dangers in My Heart Manga Gets Spinoff Centered on Kana Starting July 22

The official Twitter/X account of Norio Sakurai‘s The Dangers in My Heart manga announced that it will be launching a new spinoff manga series centered on Kyotaro Ichikawa’s older sister, Kana. 

The spinoff manga will be titled Boku no Kokoro no Yabai Yatsu Love Comedy ga Hajimaranai and will launch on Akita Shoten’s Champion Cross website on July 22, 2025. Artist Haika Nanasaka will illustrate the manga and main series creator Sakurai will supervise the work. 

The Dangers in My Heart romantic comedy manga has been serialized in Akita Shoten’s Manga Cross website since July 10, 2018. It was originally serialized on Weekly Shonen Champion between March to April 2018, before moving to Manga Cross in July 2018. The series is published under the Shonen Champion Comics label and has released 12 tankobon volumes as of June 2025. Seven Seas Entertainment licenses the series for release in English.

The first season of the manga TV anime adaptation aired for 12 episodes in 2023, while the second season aired for 13 episodes in 2024. A compilation film of the two seasons, which includes brand new animation sequences, will be released later in the future and showcased at this year’s Anime Expo. 

HIDIVE is streaming both seasons of The Dangers in My Heart, describing the main synopsis as:

Fascinated by murder and all things macabre, Kyotaro daydreams of acting out his twisted fantasies on his unsuspecting classmates — but an encounter with Anna Yamada, the gorgeous class idol, lights a spark in the darkness of his heart. It’s a classic tale of an antisocial boy falling for a popular girl, but neither are who they appear to be at first glance. Will Kyotaro and Anna defy their expectations of each other — and of themselves?

Sources: The Dangers in My Heart Official Manga Twitter, Anime News Network