Show is Yoru no Kurage wa Oyogenai - Jellyfish can't swim in the night
Probably spoilers. Last warning.
spoiler
Here: https://yorukura.fandom.com/wiki/Kiui_Watase
I did this based on this scene from episode 11: https://streamable.com/oq226r
Comrade Kiui is FtM.
Not only that but his name "Watase" splits into "Wata" which means "crossing" or "ferry," often used in Japanese names to imply traversing a river or similar feature, hinting at transitions or change. While "se" meaning "rapids" or "change" is also another blatantly huge clue.
I haven't worked out what Kiui might reference, it's written in Katakana and some think it's the Kiwi bird. I don't know if this is related or not, someone else might.
QED
EDIT: Edit war has begun.
This edit warring is turning the page weird.
It's because the transphobic douchebag that keeps editing is only changing the "HE" to "she" and missing the "his/her" ones.
I'm too autistic to figure out if the last line is referring to Mahiru or Kiui?
Ahh hmm. That's probably referring to Mahiru? I think.
That's also what I was thinking, in which case it should be she/her.