Youhei Mashiba (twin brother)
Mitsuki Mashiba is a member of Kyoko's old gang, she first appears in episode 6 of season 2 "Hired, Fired, Tired", she fills in for Taneshima and Sato as a cook. She is currently working as an insurance agent and is easily embarrassed by her past looks. Like her brother, she is more than willing to avail herself to Kyoko should her leader call for her help. Mitsuki is also highly protective of Yachiyo, developing a dislike of Jun as a result of his romantic interest in Yachiyo and his correct assertion that Mitsuki's attitude towards Yachiyo is the reason why Yachiyo has not become self-sufficient.
She presently wears red business attire and brown hair, though she used to have puffy blonde-dyed hair and yankee schoolgirl attire.
Her equipment is fist knuckle, because she used to be a thug. She's certainly using it for self-defense.