When North was younger, he had asked his elder brother why he loved Summer so much.

"Because she deserves my love. I like her determination, but I feel sorry for her toughness. She's the only one who can make me feel this way. North, you know what? I hope I can protect her and help her whenever she's in trouble. Even if she doesn't love me, it's fine. I just want her to be happy!"

"But it's just an unrequited love. Isn't it sad?" North asked his brother, but his brother had broken into a brig