The main protagonist. Toneriko is the Number 5 ranked hitman of Thanatos. In Chapter 1, it was shown that his family was killed by Tekirai ten years ago, when he was just a child and for that reason he joined the guild. He has two weapons, which are pistols called "Evergreen". His aim is to defeat the man who killed his parents, No. 1, Tekirai, and to protect the gardener, Mizuto. His relationship with Tekirai remains unstable, as he often vows to kill the man, but has often been founded slightly attracted to him as well. This is made clear when Ageha comments that Toneriko became "excited" when Tekirai appears, also when he further clarifies that Toneriko's "heart as been stolen" by Tekirai and, despite all efforts, Toneriko was not going to get it back.