1x37 - Saiyuki

Sanzo and his party walk into a village in which Cho-Hakkai grew up in an orphanage. Hakkai has feelings of nostalgia and bitterness; he was a desperate child who never smiled. He meets Sister Shaohei, who spent her childhood in the same orphanage. She tells Hakkai there is a boy who never smiles, just like little Hakkai. Hakkai wants to see the boy.