VIDEOS:
Kanna and Saikawa
Just because Kanna will outlive Saikawa by thousands (if not millions) of years, doesn't mean they're not best friends.
Example of:
Mayfly–December Friendship
Just because Kanna will outlive Saikawa by thousands (if not millions) of years, doesn't mean they're not best friends.
Example of:
Mayfly–December Friendship