So Kouji spends time in the academy doing academy stuff, ignoring classes that teach him stuff he already knows and so gets a reputation as a lazy student from some teachers. It’s mostly a lot of basic info about the world that is useful to Kouji right now, filling in the huge gaps in knowledge the manga left. That and the physical eduction classes which he gives his all in.
He practices launching things with chakra ALOT, building up aim and projectile speed. He can bury a pebble deep into a tree right into a centimetre wide target now if he charges it up long enough. He also has good enough chakra control and stamina to walk up walls now without risking falling off and breaking his neck and that is neat.
He spends lots of time playing with the future team 7 and they become great friends so early on. Kouji hopes it helps Sakura with the bullying she is receiving from the other girls. They play and practice and become a lot further ahead in skill than a lot of the other kids.
Kouji breathes an enourmous sigh of relief when Itachi’s raven comes to tell Kouji that Shisui wasn’t killed by Danzo. Shisui just made himself hard to ambush for the predicted time in wich it happened, and Shisuis plan to stop the uchiha coup worked out fine.
The last few months worked out great! The timeline seems much improved and on the right track.