Extremely vague description for a bl

hiii I need help finding another manhwa,, it was deep in my lists before the disappearance,, I don’t remember much except it was like some sort of transmigration or memory loss? The ml had white hair and had a cafe the mc I think had a little sister that guided him to the cafe after he thought it disappeared and was really depressed about it,, I remember the cafe had like a less modern and more of a traditional Asian tea room or house! If anyone knows anything similar please let me know!! I swear to god this exists! I’m pretty sure it was completed too