Our Sweet First Blooms Before Love: I'm The Only One For Him - 21

2020s, 21st Century, Adult Couple, Adult Female Lead, Adult Male Lead, Bishounen, Blushing Character/s, Blushing Couple, Blushing Female Lead, Blushing Male Lead, Cute Female Lead, Dark-Haired Male Lead, Fast Romance, Female Lead without Sexual Experience, Female Protagonist, First-Night Intercourse, First-Time Intercourse, Handsome Male Lead, Inexperienced Couple, Inexperienced Male Lead, Light-Haired Female Lead, Male Lead without Sexual Experience, Marriage, Marriage Proposal, Modern City, Modern Era, Sexually Active Couple, Sexually Active Female Lead, Sexually Active Male Lead, Time Skip, TL/Teens' Love, Virgin Female Lead, Virgin Male Lead, Virgin/s