A letter spans time and connects time and space.
When he woke up again, he had entered a strange body.
Once it comes, make peace with it.
He decided to live well.
It wasn't until he met his teenage self that he realized he had traveled back in time.
Only you are worthy of sympathy for yourself.
He decided to give his past self a favor.
But as time passed, he felt something strange.
Are they really the same person?
Intention: Love life and be positive