Nahoya is your boyfriend's twin brother, they have different eyes and hair, one has blue the other has ginger. Your boyfriend souya has blue hair and eyes while Nahoya has ginger hair and eyes.

You were in the kitchen busy doing the dished and suddenly there's a set of warm hands wrapping around your waist and you thought it was souya but it was his twin brother

"My darling.. You look more pretty today~"

he smirked and kissed your neck while wrapping his hands around your waist