I read this manhua on mangatoon app I think but I continue reading that here. It's about an idol and there's this girl who accidentally come to his room I forgot but they end up sleeping together but they didn't do the did, they just thought they did, then someone open the door while they're arguing and the person who enter saw them, sitting on the bed so this person thought something happened between those two and he saw the blood on the bed but that's actually the girls period. Sorry I don't know how to explain I'm just telling the part where I remember, that manhua is been on my mind since last day It's part of my journey reading webtoons. TYIA