Eiichirou 'Henry' Arakawa/Relationships

Fumie Arakawa (荒川 章枝)
Mother | 60 | nurse | has minimal contact with her but she sends him cards with cool pictures or small souvenirs once in a while. They've only met in person a few times.

Hitoshi "Daniel" Yoshizaki (吉崎 仁史)
Father | 76 | pilot | Henry is very bitter about Hitoshi's actions, and has insisted on never seeing him.

Catherine Calder
'Auntie' | 71 | mathematics professor at a local university | Henry and Catherine have a complex yet healthy relationship.

Russel Yoshizaki
Half-brother | 50 | general practicioner | Mature but still soft, Russel took on most of the fatherly role when it came to dealing with Henry.

Maisie Yoshizaki
Half-sister | 48 | veterinarian | Strictest of the three siblings, but also the most in touch with her own emotions. Really helped out with the deeper stuff and some of Henry's self-esteem issues.

Briar Yoshizaki
Half-brother | 44 | astronomer | the definition of YOLO, Briar is the more impulsive one of the trio. Often took Henry to random outdoors activities and instilled a lover for nature in him.