Ken Miyashita - Tumblr Posts
Once I post the colored versions (which will be tomorrow), I'll start a Masterpost to go to each little bit I talk about this.
Last drawn (but the head of the group) is Ken Miyashita.

Their right arm doesn't look that good, which I think I somewhat corrected in the digital version. Throughout the drawing process, their gender did something, and I don't know what that is or how it affects them.
Cabin Sekai Masterpost
The Beginning Rants
Initial thoughts
Sekai title
Boy band decision
Picrew designs
Yuuto sketch
Nobutoshi sketch
Hanzou sketch
Ken sketch
Delay
Character Information
First character introductions
Cabin Sekai Characters
(Placing 2 together for better mobile scrolling format)
Ken Miyashita & Hanzou Akabane


Ken Miyashita - The head of the group and an American transfer student, he's a positive fellow who can't seem to not focus on music. It's a core factor in her life, which leads him to connect with others through shared songs or introducing songs. They can play various instruments due to their unending interest in music, but that leads her to struggle in subjects that don't translate to music that well. Moving to a new school is hard enough, so Ken retreats into his love of music to ignore outside pressures.
Hanzou Akabane - Assigned to help Ken in her first few days at school, Hanzou is Ken's first friend at Kamiyama and the second member of the group. He is more reserved and stand-offish, but tries to help others the best he can. His parents divorced after their arguments got to a breaking point, and lives with his mom. She lets him do whatever he wants, but he just wants her to spend time with him, as she is rarely at home at the same time as him.
Nobutoshi Akabane & Yuuto Yoshinaga


Nobutoshi Akabane - Hanzou's younger brother, he's aloof and free-spirited. After an incident that scarred him, his parents divorced and he lives with his dad. His dad provides guidance and gives him attention, though Nobutoshi would wish he'd lighten up as he's too overly protective. He tries to reconnect with his older sibling, but to no avail.
Yuuto Yoshinaga - The fourth member of the group, he is stoic, level-headed, and way too formal. Adjusting to a more normal life after running from a yakuza gang, he makes friends with Hanzou as they take things more seriously. He is pretty emotional, but is conditioned not to demonstrate so.