The Hero Loves Me After Reincarnation (BL)

Demon General, Baal, died by suicide when he was being taken prisoner by the Golden Knight, Cain, and reincarnated in a technologically advanced world with no magic. The humans in this world are too ignorant of the prophecy involving him and they mostly ignore his existence.
When he's gotten used to life there, the reincarnation of the hero walks into his life and confesses his love for him.
The hero isn't the only one from his past life in this life. Great...