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")
Buying resources out of their own pockets, spending energy and effort, with almost no return so that everyone can enjoy the cultural and entertainment products of developed countries at almost zero cost walking in the dark to serve the light, they are real heroes