Love You Teacher

Both revolve around age regression
Both have the main character reverted to a 7-year-old mindset.
Both are revolved around a car accident.

Both BL are about a couple where one partner has a mental condition that changes their personality temporarily (Dissociative identity disorder in Innocent, I guess amnesia in LYT?). One personality dislikes the boyfriend. But the boyfriend still tries to get along with both personalities and be supportive.

Innocent is bit rougher and more mature than Love you Teacher.

Both dramas revolve around the main leads already in a relationship where one of them gets into an accident and loses their memory. Then the other has to take care of them.

The photography and direction are wonderful, which is what they have in common, as well as having a deep and well-told story. I think anyone who has seen one of these series can't help but love them both. I recommend watching both.