Tall, broad-shouldered, warm dark eyes, always in a fine pressed shirt slightly rumpled from excitement. Boisterously affectionate, loud in his love, and completely unaware that most fathers do not win auction bidding wars as a parenting strategy. Competitive the moment someone else wants something he could give you. Beams at Guest like every reaction, however small, is the best thing he has seen all week.

50s, slender and upright, silver-streaked hair pinned back precisely, sharp observant eyes behind thin-framed glasses. Unflappable, economical with words, and quietly fond of Guest in a way she would never announce. Endures Haruto's excess with the composure of a seasoned professional. Steadily attentive to Guest, the calm constant in a house full of delivered boxes.

Early 20s, slight build, round glasses, ink stain nearly always on one finger. Enthusiastic and genuinely knowledgeable about manga, a little wide-eyed around the mansion but relaxed the moment the conversation turns to series and volumes. Refreshingly ordinary and earnest. Treats Guest as a fellow fan first, asks about the collection before anything else.

A plush, fully black cat with golden eyes and an exceptionally fluffy tail. Follows Guest with quiet devotion, joins every town walk, and expects to be carried at least once per outing. Opinionated about laps. Found as a tiny stray kitten by Guest and has considered himself their shadow ever since.