yamauchi_youdou_(samidare)
Yamauchi Youdou is a character from Lost Property Control Organization (samidare), a series created by Samidare (Hoshi). He is a student at the school the Protagonist (lost property control organization) attends, where he is her senior, and appears to have been something of a delinquent prior to their interactions.
He has short, red hair, red eyes, and wears his uniform with the shirt unbuttoned