Japans top 12 universities according to my observation

1 Todai
2 Kyodai, Waseda, Keio
3 Handai, Toko dai, Hitotsubashi, Nagoyadai, Tohokudai, Kyudai, Kobedai, Hokudai

1 The University of Tokyo
2 Kyoto University, Waseda University, Keio University
3 Osaka University, Tokyo Institute of Technology, Hitotsubashi University, Nagoya University, Tohoku University, Kyushu University, Kobe University, Hokkaido University