Please Help Me Find This Manga

Please help me find a bright and cute manhwa that I’ve been thinking about. There’s a scene with a little blonde baby prince who’s going through a hard time because his brother treats him badly. Then there’s another kid—he’s the older brother of the female lead—with a soft silver or bluish bob haircut and bangs. Even though he’s still a kid, he becomes friends with the baby prince, and they start writing letters to each other and become pen pals. That’s all I remember, but I really hope to find it again. PLEASE HELP I'M SO DESPERATE I TRIED REDDIT TIKTOK CHAT GPT PLEASE HELP

A manga where the uke is a dragon but he needs a person to tell them that he is a dragon to release him and actually be free but the seme traps him and tells him he is a fake dragon but at the end he gets released and seme tried to chase him

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 (⊙…⊙ )