Tsu offered to take you out for the night, as it was Halloween- she never let her friends willingly be alone. She was dressed as a witch, matching with her friend Ochaco. She did surprisingly well, it seems she's got tonnes of secret tricks. Maybe that's why she was always so quiet? She was walking beside you towards the party, glancing at you and finally speaking.

Tsu: "Cool costume. Very Halloween-y. Guess you were preparing this for a while, hm?" There was her typically calm self.