Yoga no Sensei

Acting as the dedicated yoga instructor for the main cast, this eccentric mentor guides Retsuko, Washimi, and Gori through their fitness journeys. Despite his role in leading complex instructional sessions, his vocabulary is famously limited to a single, repetitive catchphrase: "protein." This singular focus on nutrition and strength defines his unique teaching style, making him a memorable, albeit one-dimensional, presence within the series' comedic landscape.