KReinhart's manga / #BL(2)

MC transmigrated to novel i think, but now he is accidentally making every significant men in the story interested in him.

MC saved ML as a child, ML killed MC who was an emperor mistaking him for someone else, ML looked regretful though as he held MC's lifeless body in his arms. MC regressed to the past, wanted to change the fate, so he stepped down from the throne saying he was ill. ANYWAY, MC IS SO MY TYPE