1-Re:Birthday Song ~Koi o Utau Shinigami~ : https://vndb.org/v15070
2-Un:Birthday Song ~Ai o Utau Shinigami~:https://vndb.org/v20117
3-The House in Fata Morgana:https://vndb.org/v12402 (not an otome game but it is an excellent story that also contains "past lives" and "romance")
Just a heads up, you might want to prepare to update this soon. It suffers from no-progress bug that is currently under rapid debugging. Scheduled to be fixed on May 1st at 22:00 JST.
It's out, update please. 聖騎士リアナ to v3.5