kokutan-douji
A character from Enbizaka no Shitateya featured in Nozarashi no Kubi, Onigashima nite. He is portrayed by Kagamine Len and is a reference to Momotarou.
A boy born from a black-wooded tree who went on a journey to find his true mother after being instructed to do so by a mermaid. He is accompanied by Saruteito and Inukichi on his travels, eventually arriving in Enbizaka and boarding with Sudou Kayo while trying to determine the culprit behind a series of recent murders. Once Sudou Kayo is revealed to be said culprit, he is the one who ends up executing her via decapitation.
A reincarnation of Allen Avadonia, who was sent to Jakoku by Behemo barisol in an attempt for him to meet Riliane Lucifen d'Autriche's reincarnation Miroku Rin. The two failed to meet because Rin left town when Kokutan was in Enbizaka and was murdered shortly after her return.
After utilizing Grim the End in a katana form to execute Kayo, he returned to the Heavenly Yard alongside Behemo and Octo Kagura.