Chill. It's a fake story.
It's fiction so of course it's not going to be realistic. Duh
i am chill duh. and ik it's fake i wasn't born yesterday but you can't deny that the older guy should take a little responsability to explain some stuff too like what's right and wrong in the relationship he's seeking. Even fake stories have some realism js (srry if i made some eng mistakes it's not my native language)
It doesn't have to. We can't decide for the author and we don't know yet what will come in the future.
So far everything is exciting since they both are still discovering how they feel.
Yuu especially, since he is still so very confused.
yea and he might underestand it more when he leaves for university
ik it's hard to reject someone whome u consider "family" to u and who's also important in ur life but honestly Yuu nii should man up and explain things to Tsubaki (i've been defending his a$$ all this time thinking that he also might be confused or going with the flow so he wouldn't hurt Tsubakis feeling but bro should start explaining some things atp)
ik yuu is still a child (he's under 18) but he's brain is developed enough to underestand what's right from wrong. Tsubaki is still in his innocent era (like 12 is still naive imo) it's not gonna break his heart if u explain that the relationship that Tsubaki wants cannot be achieved atm until he reached adulthood because it's weird and Tsubaki must learn more about his feeling and sexuality (i mean he can literally switch sides when he reaches puberty or when Yuu leaves for university) Tsubaki might be angry and go ask advices from the idk his name but it's still not a rejection it's like "ok i'll give it a try but only when you're over 18 and more underestanding of ur own feelings and who you really are"
Sadly idt the author will EVER go with this route (sorry long but i want to major psychology and child psychology is one of my courses)