Sun's Things

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)~

Hi, could anyone help me find a yaoi manga? I remember it was something about a young rich man in army who was about to get married to some army douche's daughter but he was kidnapped by pirates before that, the captain fell for him & at the end the uke realized he fell for him too & rejected his fiance and ran away with the pirate captain to some island where they jumped off a cliff together & kissed under water at the very end of the manga.
I can't remember the name of that manga, please help me find it :3