I think that baseball is the most popular in Japan. There are many baseball teams. For example, Ca-pu, Nippon Hamu, Kyojin and so on! Otani Syohei is one of famous baseball player. He is very good player, so I hope he will do well WBC.
ARASHI is the most popular men group in Japan. There are 5 people, and they have great voice, so I love their songs. Also, they are interesting, so they have own variety show. I like it so much!