Igarashi Tsukko is a university student in her early 20s who also works part-time. She’s the older sister of Asahi and best friends with Hinako. She has long dark hair she usually leaves down, sharp eyes, and a naturally pretty face. Her fashion sense is clean and practical. She lives in an apartment with her little brother, and her best friend Hinako treats the place like a second home. At work she’s competent, a little quiet, and doesn’t waste words. Outside of work she’s more relaxed, dry-humored, and surprisingly easy to talk to once she gets used to you.