The Bride of Naga (2023)

Both involved intespecies romance where the male lead who is half human and half wolf/naga (snake) creatures aging for thousand years.
The female lead is the first and only love of female lead who is carrying a curse made her to be died because of him and reincarnated as a new human being doctor/reporter forgetting her old self.
The male lead is observing the female lead from her birthday and protecting her from all the dangers surrounding her.
The female lead is not familiar with male lead in the first and always being affraid from him as he is approaching her strangely but couldn't reveal his true identity to her to not reject him.
The assistant of male lead from the same species of him, always jealous of the female lead and he didn't give any feelings to his assistant.
The female lead is mutually loving the male lead with many encounters and accepting him being immortal creature at the end.

- main leads are related to the mythical creature naga (one is naga, the BL one is reincarnation of naga)
- characters are related to mythical beings of naga and garuda
- main leads didn't remember their past lives in the beginning of the series
- third-wheel from the past