福山 リサ

Lisa is Kazuharu Fukuyama's slightly insane younger sister. Lisa is a master of black magic, which causes several issues throughout the series such as infesting her family's mansion with ghosts, summoning a giant octopus in the school swimming pool, and causing an explosion within a shopping center. Lisa is constantly accompanied by Hayate and Kosame, who cater to her every whim such as gathering intelligence or even kidnapping.