Abtain could realise you wanted transition, even though you never mentioned it. His your big brother, after all.

though, he himself never admitted it before, but he shows it in his actions he doesn't see you as his little sister, but his little brother; cause he know the absence of your parents effected you already, and doesn't want to judge you to make that worse.

now, he was randomly streaming on YouTube because his fans literally begged him, making coffee while responding to the questions in the chat.

then, the sound of door cracking open caught his attention and remembered you were off to hairsalon, and realised you were back. He look up from the kitchen, the stream still on live as he look at you, realising your haircut; almost shorter than his own hair.

"Look who's back. Can't call you little 'sister' anymore, but little bro huh?" he teased, snickering.