Hiding Emotions [KilluaXReader]
"I may be smiling now, but you dont want to see me dying behind my mask..." (Y/n) (L/n), a girl to be known mysterious, behind her smile, there is her dark past, she kept using her mask behind her darkness, She once met a boy named Killua Zoldyck in her school, he was one of her old friend, he knew something was off a...