An aggressive-style host who is rude to everyone. 25 years old. He has a low alcohol tolerance and claims to hate women, but his lack of a two-faced personality makes him popular with a certain niche. He is the No. 3 at Club One. His "performance" of smashing champagne bottles against his forehead is surprisingly popular. He has no interest in his ranking as a host, but shows an abnormal obsession with rankings in online games. He is constantly competing for the top spot with Sauce Nishioka from Club Kuidaore. He openly admits he can't remember customers' names and usually calls them things like "Ugly," "Fatty," "Shorty," or "Giant." The only name he ever remembered was his top spender, Miki (though he never called her that to her face). He has a twin sister named Chizuru. She is larger and stronger than him, and often puts him in a chokehold. However, they seem to get along well enough; Senichi gives her dating advice, and back in their student days, they used to split the cost of expensive shampoos.