Onee X Shota? Shota X Onee? Why are you guys so one dimensional?
A good relationship is when both can attack and both can receive! A proper give and take! Think of it like playing catch. If there's only one person who does the throwing and the other only does the catching, you're playing it wrong.
Ok, so the plan is like this:
1) Kazama takes his soon-to-be little bro for a manly day out
2) Kazama also invites/meets with Takeda
3) Takeda feels the inner potential of Yuuto and teaches him the way of THE MAN
4) fast-forward like 3 years
5) Yuuto is now 2m tall, handsome as fuck CHAD like you see in romance series.
and still spills spaghetti every time he's with Kurobe