A girl gets a magic girl suit jammed into her body that makes her moan during every transformation, then has to fight actual supervillains while dying of embarrassment. The comedy isn't in the transformation itself, it's in watching her try to maintain any dignity while her own body betrays her in front of people. A stupid premise executed with enough commitment that you stop questioning why this exists and just laugh at how relentlessly it commits to the bit.
Arisa's ordinary life as a high school student takes a mortifying turn when her inventor brother's experimental combat suit gets accidentally grafted into her body. The suit activates without warning, forcing her into transformations that come with an embarrassing side effect: her voice hits ridiculous highs during the process. Before she can even process what's happening, Arisa finds herself conscripted into an unwilling battle against a shadowy criminal organization bent on causing chaos. Caught between wanting to live a normal teenage existence and being thrust into dangerous missions she never asked for, Arisa struggles to balance schoolwork with secret combat operations. The suit gives her genuine power to fight back, but the constant humiliation of her transformation sequence makes every battle a test of her nerve and dignity. Comedy collides with actual danger as she discovers that being a reluctant superhero means dealing with both the threats around her and the crushing embarrassment of her new calling.