Kusozako Boukou Oshii-san

The high school 1st year Kishino Mamoru was expecting a fateful encounter and he met a pretty girl classmate Oshii Koko, and happened to know her secret. To his surprise, he found out Oshii-san's bladder is super weak…!! To not 'leak' this secret, Kishino Mamoru swore to protect Oshii-san('s bladder). Golden-colored heart-pounding youth love-comedy, raises its curtains!!