Himekishi-sama no Himo  Play Trailer

He Is a Kept Man for Princess Knight., The Kept Man of the Princess Knight, 姫騎士様のヒモ

The Dungeon City is known for its criminal activities, immorality, and fatalities. Despite this, there is one redeeming factor - Arwin, the stunning Crimson Princess Knight. Along with her valiant group of adventurers, they journey into the city center's dungeon in search of a legendary treasure that can restore Arwin's fallen kingdom. Many aspire to join her quest, but that position is already occupied by Matthew, a loathed figure in town due to his cowardly nature and reckless spending on alcohol, women, and gambling. No one in the city, not even Arwin herself, knows Matthew's true capabilities.