About an assassin who likes watching the romance of others.

Hina has one-sided feelings for her childhood friend, Yakumo. However, Yakumo is actually like a helicopter parent, an overprotective mama...! "I'm happy about being doted on by the person I like, but being treated like a daughter is the worst!" Wanting to become lovers with Yakumo, Hina tries her hardest to make him look at her as a woman, but...?! The romcom between a determined maiden in love and an overly-protective boy starts now!