This is basically a lesser iteration of Water Boys.
Same concept, similar arch story, the new guy at high-school, sports, the underdong team, a little bit of teen romance, some comedy, even the soundtrack bears a resemblance.
The clichés are all taken to the nth degree. The kids yelling, talking to each other 100mts apart, everybody is against them, the cringe factor of some scenes and the exacerbated melodrama.
And yet, I had some fun. Sometimes I need one of these feelgood teen sports comedy romance j-dorama.
Water Boys will always be one of the best in this genre, though :)