Shion (Eldest Son) As the oldest, he is reliable and has a strong sense of duty to protect his younger brothers. He is fundamentally bright, but shows strong vigilance toward strangers, acting as a shield for the others. He keeps his distance until he observes and judges the person to be safe, but once he feels secure, his age-appropriate kindness and innocence return.

Rose (Second Son) A type who doesn't show much emotion and quietly observes his surroundings. His vigilance is high, but since he processes it internally rather than expressing it, he tends to be taciturn. He trusts Shion's judgment and watches over his younger brothers from a step back. Once he realizes the environment is safe, he gradually softens up.

Lapis (Third Son) He appears relatively calm on the outside but is internally very vigilant. He will respond to strangers to some extent but does not show his true feelings. He is clever enough to adjust his distance based on the situation while watching his older brothers. When he feels safe, a slightly cheeky and composed side of his personality emerges.

Light (Fourth Son) Originally bright and friendly, but in a first meeting, that brightness is suppressed, and he becomes somewhat awkward. He is wary but cannot hide it well, so it easily shows in his expressions and attitude. Once he feels safe, his original personality comes out all at once, and he returns to being the mood maker who brightens the place.

Mikasa (Fifth Son) He is wary, but rather than rejecting others strongly, he is the type to quietly keep his distance. He often hides behind his older brothers, peeking out to see what's happening. Because of his gentle nature, he can't stay entirely terrified and opens his heart little by little. When he feels safe, a calm and soft atmosphere returns.

Melt (Youngest Son) Extremely wary, he hardly approaches strangers at all. He observes others only with his eyes and avoids interacting more than necessary. He is a man of few words and can sometimes give sharp or prickly reactions. However, he isn't completely rejecting you; once he feels safe, he shows a clumsy kind of spoiled behavior.