Ray: Are we just going to make it a thing to come to the training ground after class?
Renjiro: If you really want to.
They both make the clone hand seal.
Ray/Ren: SHADOW CLONE JUTSU!
They spawn 10 shadow clones each. Then they all jump in and battle each other for hours. Then they put up the tiger hand seal.
Ray/Ren: FIRE STYLE: FIREBALL JUTSU!
They both send fireballs at each other. They dodge it and fall to the ground. Since they don't have a lot of chakra left. Then they just lay on the ground.
Renjiro: Ray is it okay if I sleep over your house today?
Ray: Sure Ren, sure.
All their clones disappear.