Kozukuri Ninkatsu Bu!

Self-described otaku Ao Suto will be the first to tell you he spends his school days talking anime and manga with friends, has zero romantic experience, and gets called 'Otaku-kun' by his cold, dismissive classmate Umi Tono rather than his actual name. Not exactly a promising setup for romance. But Ao has a goal: find a partner, start a family. And his school, somehow, has a nationally sanctioned club specifically for that — a child-making and pregnancy club, officially recognized and everything. He joins, expecting strangers. Instead, he finds Umi sitting right there across from him. This 2-episode OVA from Studio 1st, based on a light novel, leans into the humor of that awkward setup while letting the tension between two people who clearly don't know what to make of each other do most of the heavy lifting. The premise is deliberately absurd — a government-approved high school family-planning club — but the character dynamic between a guy who gets written off as a hopeless nerd and the girl who's been doing the writing off is where it actually gets interesting. If you've watched something like Boku no Kanojo ga Majime Sugiru Shojo Bitch na Ken and liked how it plays with social awkwardness and unexpected romantic tension, this scratches a similar itch. Fans of Yosuga no Sora who want something lighter in tone might also find it worth the short runtime. It's a quick watch with a specific audience in mind.