KINDAN SHITEI DE BREAK THROUGH: YUUSHA NO MUSUKO GA MAOU NO DESHI DE NANI GA WARUI (MANGA) - RAW
Other names: Breakthrough with the Forbidden Master, 禁断師弟でブレイクスルー~勇者の息子が魔王の弟子で何が悪い~, A Breakthrough Came Out By Forbidden Master And Disciple, Breakthrough with the Forbidden Master – So what if the Hero’s son is the Demon King’s disciple~, Kindan Shitei de Breakthrough ~ Yuusha no Musuko ga Maou no Deshi de Nani ga Warui ~