Is there any item box there ? That has Korin Tribe's spell ?

yes, go other ch

Do what Bonich wrote. Try other channels. And if you can't find it on that spot, try the one right next to Korin Tower. There is a box right next to the squirrels there.

Quote from Zzero

U do know why I need that Item box near Korin

because that item give you one quest for become in adult

see this video:

There's another box close to the RP1 entrance. When u teleport there run North-East.

there is one in practice place near a npc hiding behind in RR HQ there i found a scroll of korin tribe

These boxes spawn everywhere, and i mean everywhere. :3