Anime Reincarnation: Obtain Artificial Artifact at the Start

Reincarnate into the world of Devil High School, activate the system to open the novice gift package, and obtain the artificial artifact Fallen Dragon's flash gun *System, you want me to take the fallen angel Leinari, who ensnared and killed Sekiryu Emperor Hyoudou Issei, as my kinsman? ! Na*? ! Do you still want me to be the harem king who has more confidante than Hyoudou Issei? ! No! No! No! I, Mubai, am a serious person! Could you please make this system more serious? Mubai: "Oh my god, it smells so good!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.