Masako Natsume

Masako Natsume is a mysterious woman frequently seen around Kanba and acts as an antagonist. She uses a laser-sighted slingshot whose red projectiles erase memories and has a penguin named Esmerelda. Masako appears to admire Kanba and is trying to retrieve Ringo's diary to protect her brother Mario, who is affected by a penguin hat similar to Himari's.