Shakkin Reijou to Hikikomori Ryuu Ouji Senzoku Osewagakari wa Kiken ga Ippai!?

In order to repay her debts, the daughter of an earl, Corne, becomes the caretaker of the second prince, Melvin. One day, while Melvin is at her mercy, she discovers his secret! He is a recluse who doesn't trust people! (Source: Kadokawa, translated)