Wombat

An extraterrestrial visitor arrived on Earth with a singular mission: to spread love across the planet. This mysterious being is responsible for recruiting five reluctant protagonists into the Battle Lovers. To blend into human society, it inhabits the preserved corpse of Mr. Tawarayama, using the teacher as a vessel. Though its real name is incomprehensible, the group affectionately calls it Wombat. Beyond this role, the creature even surfaced as a feared underworld boss in the Robihachi series.