Makai Ouji: Devils and Realist (2013)
Original title: 魔界王子
Makai Ouji: Devils and Realist is a 2013 Japanese-language animation series. It stars Takuya Eguchi, Takuma Terashima and Yoshitsugu Matsuoka.
A brilliant, skeptical noble accidentally summons a powerful demon and is forced to choose Hell's next ruler, while demons and angels battle for his nomination.
Where to watch Makai Ouji: Devils and Realist
Stream: Crunchyroll, Crunchyroll Amazon Channel