Takeo Gouda is a freshman in high school. (Both estimates) Weight: 120kg, Height: 2 meters. He spends his days peacefully with his super-popular-with-girls, yet insensitive childhood friend, Makoto Sunakawa. One morning, on the train to school, Takeo saves a girl, Rinko Yamato, from being molested by a pervert. Could this be the beginning of spring for Takeo?

From Viz Media:
Takeo Gouda is a giant guy with a giant heart. Too bad the girls don't want him! (They want his good-looking best friend, Sunakawa.) Used to being on the sidelines, Takeo simply stands tall and accepts his fate. But one day when he saves a girl named Yamato from a harasser on the train, his (love) life suddenly takes an incredible turn!