I'll never understand Japan's obsession with randomly inserting the losing childhood trope halfway or late into a story after an established or implied pairing... Annoys the hell out of me.
I'm positive several chapters of this is already uploaded here.
Edit: Found it.
https://mangadex.org/title/79dba6c7-cc1e-475c-971b-82898375d27b/komen-fuufu
According to a review on the novelupdates page, the romance isn't as wholesome as it appears...
I thought it was refreshing to finally have some decent romance in a reincarnation/isekai story for once but of course we just can't have nice things...