16+12 - Nijuuhachi

16+12 - Nijuuhachi summary:

Yu Komakita died in an accident on her 17th birthday, but was reincarnated as Shiyu Kaburaki with memories of her previous life.
At the age of 12, Shiyu is reunited with Chiharu, who had loved her so much that he proposed to her original self. Chiharu, who was five at the time, has now turned seventeen. Chiharu had closed his heart because of Yu's death, but......
A much-talked-about reincarnation love story!