Please Help Me Find This Manga

Hi does anyone know the name od this manga?
The MC woke up in the past in a pool of water because the person he got reincarnated as was trying to drown himself. The MC is something like an emperor? The ML is at first some kind of advisor or something like that for the MC but in the end turns out the MC is not really an emperor he is just a decoy for the real one so that if he gets killed the true emperor is still alive. And the real emperor is the ML.
Please help me find it （TДT)~

I need help finding a yaoi. Its a short story of 1 - 2 chapters where the main character (uke) is a salary man and goes to hook up at a subway/metro station toilet. He eventually finds one who is compatible with him and constantly meets him at the same time and same day of every week and procceds to f*** in the same cubicle of the stations's toilet several times. After a few hook ups, they finally exchange names (⊙…⊙ )

I'm looking for a yaoi or shounen-ai manga where the main character is separated from his body, which continues to function as a husk. The male lead (who has black hair) and the main character get sent into a system or situation where, in order for the main character to return to his body, the male lead must make the body fall in love with him. I don't remember clearly, but the main character has either pink or blond hair. If anyone recognizes this story, please let me know!

The first one is a bl where the MC is a Face con and the ml has a pretty face.. I found it on the credits of another Manhwa where the ml has his face mask pulled down and he has blond hair and a beauty mark. The MC has brown hair but that's pretty broad l.. Anyways, the other one is an omegaverse where the ml is the owner of a cafe and he hates omega's so the Omega MC pretends to be a beta and then gets found while he's in heat because the ml visited him cuz he was worried? That might not be right but alpha coffee shop owner that hates omega's and omega that pretends to be a beta is.

Please help me find this manhwa
It was a Isekai manhwa where female protagonist was villainess with purple hair and married the ml but then she died and was reincarnated as blonde princess who was to marry her husband again. It had realy bad translation and I dropped it to wait for the better one but I forgot the title now.

The uke and seme used to go to the same school and seme got bullied the uke tried to help but somehow couldn’t so when they grow up uke becomes a office worker that get bullied by his boss and seme is a ceo that comes to ukes company