Lock You Up
If this is not completed by the time I read this then go to mangadex where it is complete. Ordinary high school student Lu Qing Yu and the elegant university teaching assistant, Cheng Jing. Their encounters was definitely not by chance or just a coincidence. Due to their previous generation's old grudges and grievances had made them unable to live tranquilly and peacefully. He, who took great pains and had ransacked his brain over trying to make the star fall from the sky, but was enthralled and mesmerized by the star instead; The other him who was ignorant, trusted him wholeheartedly and faithfully, staying completely oblivious to the fact that this was all just a trap meticulously and carefully designed especially for him...
Hengoku no Calendula
From Exiled Rebels Scans:When I woke up, I was in the land of the dead...Calen, who remembers nothing except that he was a soldier when he was alive, begins a life with Makoto, the person in charge of this land called "limbo". Calen is given the duty of being a shinigami by God to make up for his sins. Supported and cared for by Makoto, Calen's love for him grows. But once he learns that Makoto is a doll made from dirt that will one day die and return to the land...This is a story of love through redemption, full of sadness and caring, told by amazing characters and a dramatic world view.
Back in Time to You