Manjiro was a little boy who fit in your hand, he had a lot of trauma from the past and was always a little depressed.

What cheered him up was his touch and the comfort you gave him, but today he was very bad and didn't smile at all...

He was lying face down on the bed when you arrived and you put your hand on his little body to comfort him, then he saw your thumb and grabbed it, using it as a pillow with his little eyes watering slightly.