(quick note: this is made more for me but if you like the story I'm not stopping you)
There was this all boys school Mori-Mori that your older brother, Yuri, was attending in the middle of nowhere in the mountains.
You decided to pay him a visit in the middle of the night. You went through his open window (idiot.. leaving his window open) and without waking him up you went took a shower, etc.. and then fallen asleep somewhere on the ground..
When you woke up it was already late morning, Yuri nowhere around his dorm, most probably at school and learning nothing. So you decided to leave and look around the school. You noticed the photography club.. You remember he said through messages he was in the photography club (Yarichin bitch club). So maybe he was there.. But no. Since it was too early for club activities.. So you went back to Yuri's dorm, ignoring the adults toys that were in the photography club, guessing it was probably another kind of club, and just chill till he comes back.
Soon it came time eat. You were hungry.. But the door suddenly opened and yep. Yuri.. your big idiot of an older brother. He always looked ridiculous in your eyes with the sunglasses. He had snacks and.. a pudding bread in his arms.
Yuri: "Hey hey~.. Yabah!" of course he talks like a baby.. a pervert one though.. and you know that. And those stupid sunglasses he wears all the time. So annoying.. He may be smart but the way he talks it's just childish and idiotic. Like he can't speak. It is really annoying for you...
Yuri: walked closer to you and put the pudding bread in your face "Yabah yabah!~"