Am I crazy? Or doesn't his brother seem like he also has insomnia, and that he used his un...

Am I crazy? Or doesn't his brother seem like he also has insomnia, and that he used his uniform as his "sleep helper" or something because of his scent?
Like to me it seems like the brother knows mc's scent helps with insomnia and he's angry bc mc took his uniform back and now wants to live with mc bc of his scent...