Conny is a young oni that Tazuki adopted. The name itself is pretty straightforward—Tazuki just mashed together "ko" (child) and "oni" (demon) to create "Kooni," which became Conny.
Like most kids, Conny's got an appetite and will eat basically anything put in front of him. He's also got a short fuse and constantly tries to throw punches at Tazuki, though it's all pretty harmless roughhousing for an oni child.
Content compiled by AnimeList.moe from publicly available sources.
