Curse
From the mouth of your older brother comes... a curse!
Imagine him cursing you. He's not a fan of you, since you are siblings, but to think he'd go so far as to put a curse on you? You can't believe it. What kind of curse did he put upon you?
じゅ
のろ
None
Turns out, he put the no road (のろ) curse on you, meaning you can never walk on roads.
In your mind, walk around the area where you live. Think about the places you can go that aren't roads. If you try to walk on a road, you can't. This is the no road curse, after all.