Reason

It can't be anyone but you

I always wondered why

You always understood 

The words I could not

put into words

You always pushed me forward

Cowardly as I am

It can't be anyone but you

I always wondered why

A million "thank you"'s piled up

And before I knew it, it was love

I realized that I love you

It can't be anyone but you

I understand the reason now

Like an angel gently descending,

You taught me the meaning

of living on the earth

Whispering, "I want you to protect me"

You supported my heart

It can be anyone but you

I always wondered why

A million "thank you"'s piled up

And before I knew it, it was love

I was in love with you 

source : Hitoribocchi wa Samishikute manga