Seraph of the End - Season 1 Episode 5 -

Eager to obtain the Cursed Gear, Yuichiro tracks down Guren and persuades him to provide him a chance at the Contract Ceremony. Passing Guren's test, Yuichiro, Kimizuki, and Yoichi put their lives on the line to make a contract with the demon kings.▽ Black Demon's Contract [Int'l: renamed English title]▽ Contract With the Black Demon [Japan: literal English translation]▽ Kuroki tono keiyaku [Japan: original Romaji title]