I will protect you this time( idolish7)

On the birthday of twins Tenn and riku 13, tenn go out of school to buy a gift for Riku, and when he was on his way home, he sees Riku running into the street and having an accident, Rico falls into a coma and does not wake up from it until 3 years later.
What will tenn do whin riku wack up ?
and what was the reason riku had peen running from??
Will tenn know?
And what will happen to riku whin he realize he has peen in a coma for 3 years .

Sorry for grammar mistake.
My language is not English .
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