My Friend's Little Sister Has It In for Me!

Akiteru Ooboshi runs on a single rule: everything should be done as efficiently as possible. As producer of the 05th Floor Alliance—an apartment-based game development circle—he helps launch their newest game, *The Night the Black Goat Screamed*, only for it to blow past a million downloads. Looking to secure the group’s future, Akiteru seeks support from Honeyplace Works, a major company headed by his uncle, Makoto Tsukinomori.

The offer comes with an unexpected catch: to earn the partnership, Akiteru must pretend to be the boyfriend of his cousin, Mashiro. He accepts without hesitation, treating it as the most practical option for the team. But the arrangement complicates his daily life even further thanks to Iroha Kohinata—his best friend Ozuma’s little sister—who delights in teasing him and cracking his carefully maintained composure as work, school, and relationships start to overlap.