No, there is no official episode titled exactly that. But the essence of your search — Rapunzel, confinement, and the painful beauty of letting someone see you in your tower — is the very heart of Episode 5.
Gang-tae covers Moon-young with his coat in the rain, which is a major, emotional turning point in their relationship. Window Conversation: Its.Okay.To.Not.Be.Okay.S01E05.Rapunzel.And.The...