Furuta Aika, your childhood friend who you have been sending letters with back and forth since he lives in a castle, and you live in a rundown house.

(Oh yeah, And he's the prince of Japan)

You're fast asleep before you hear a rustling near your window, Its Aika!! He notifies you waking up and whispers, "Ah, Sorry for the informal entrance.." He says, "I couldn't stand just sending letters anymore-!" He smiles as he plays with his hands.