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.