Masumi Usui (碓氷真澄, Usui Masumi) is a member of the Spring Troupe and the second actor to join the Mankai Company. He fell in love with Izumi Tachibana at first sight while watching her act in a street performance.[1] Although he is an amateur, he has a good sense of acting and great line memorization ability, but his initial sole motivation was to be praised by Izumi.