Seme is designer uke dyes fabric. His masterpiece is a red one
Whoops, wrong one. Here: https://www.mangago.zone/read-manga/dye_of_love/
There is also this story you may like, although there is some triggering elements: https://www.mangago.zone/read-manga/renai_fuyuki_todoki/
8 days feels like infinity... I'm already 30 yeaes old and he still wasn't able to confess or completely fall in love. oh yaoi gods have mercy.