Looking For Yaoi Manga

Im looking for a yaoi manga where the two main characters have some sort of disease that makes heart appear on their body because of something to do with love and they have to take medicine for it to go away the two main characters are childhood friends and one had loved the other for a while and then they discover that they both have the disease and eventually get together....

this is all i remember about it please help me find the name of it(￣∇￣")

Do u guys know any yaoi mangas where like the seme touches the uke’s stomach when they’re fucking so he can feel how deep he is or where the uke is like wow you’re up till my stomach! I can feel it! This sounds so weird to ask but I wanna read stuff like this rn

I had read that yaoi from another site, it was in mangadex because that story wasn't here. The story was like the seme kidnapped the uke and I think he use to hit him and some other things but at the end the uke lost his memory so the seme did those things because he wanted for the uke to remember everything and at the end he remembered all, and the kidnapped thing was like he rescue him at the end. I think the uke used to escape from the seme lots of times too ahh i don't remember very well. It was a One shot pleaseee help meee ahhh please...

Hellow all, there was once this questionnaire where people answer it, and then identify their sexual kinks. I found it also from mangago.
My friend asked me for the link and i just forgot alrdy. Anyone who knows, remembers, please answer thx!
If im not mistaken, the background was black. And there were like A LOt of questions.
First page /end page was like saying, do you have interest in supporting our research in kinks or sth.
Please please thxx