which stores in Tokyo would you recommend to shop on for everyday clothes and some winter wear to use in Sapporo?

i will be arriving at Narita on the morning of Feb 27 2024, with little clothes packed.

i’ll be spending a week in tokyo, and a week in hokkaido and so my plan is to spend the first day shopping for clothes first during the downtime from morning to lunch, and then between lunch and dinner. 🤣

currently was just planning to find a uniqlo/gu but open to suggestions especially if there are any sales! also buying clothes as souvenirs ao if theyre in one location, great, if not, then its nice to have places marked to visit!

TIA!
🇵🇭

by Electronic-Fish-6960