He Barged Into My Life To Force Me Into Marriage!

Rui is a very serious person who isn't as confident as she seems on social media. One day, when she wakes up to find a naked man sleeping next to her, she can't remember what happened the night before. But, as her foggy memories begin to clear, she recalls a night of passion. Not only is Kenichiro the man who took her virginity, but he's also the new president of the big resort company she works for. Furthermore, this perfect, handsome man who seems to have everything he wants decides he wants to live with Rui! He relentlessly pursues her and won't take "no" for answer. Flustered by his advances, she agrees to let him live with her, but on one condition: no lovemaking. Still, the potential remains for their platonic relationship to develop into something more.

(Source: Renta!)