Zettai ni Oho-goe Dasanai Michika-chan

Michika is a quiet and reserved girl who finds herself in an embarrassing situation when her friend suggests they play a game. The challenge is simple: she must not let out any lewd sounds, no matter what happens. Determined to maintain her composure, Michika agrees, unaware of how difficult the task will be.

As the game progresses, Michika struggles to keep her voice down while her friend pushes her limits. The tension builds as she tries to suppress her reactions, leading to a series of increasingly intense moments. Her resolve is tested, and she must find a way to endure without breaking her promise.