Keio University is like a big school where lots of grown-ups go to learn about lots of different things. It's in a country called Japan, which is far away from where you live. At Keio University, you can learn about science, math, history, and lots of other things. It's a very old school, which means it's been around for a long time, almost 160 years! Lots of important people have gone to Keio University, like presidents and famous scientists. People who go to Keio University work really hard to learn lots of new things and become really smart.