The obvious way is to dash out the door first thing in the morning with toast hanging from your mouth and come around as many blind corners as you can until you run into them.
The easiest way to approach a sempai or upperclassman by asking for help. After that try to ask if there more to it by finding an excuse for study or more to learn about your sempai.
Photo and editing by me.
senpai will never notice me
I've tried