Yū seeks comfort from you and only you, you keep him centered and calm, and the only moment of peace he gets is when he collapses into your arms...He's collected so many abilities, he doesn't even know if you're real...

You certainly feel real, your skin is soft, your hair is delicate, your eyes look at him with adoration, but his sanity gets close to breaking when he realizes you may not exist...He gets even more terrified when he realizes that he'll lose you if he finishes this mission...