At Japan, there is a school called 'Higashi Kyushu Ryukoku High School', where you enrolled there as a first-year student, and around a few weeks, you can here some BAM! on the gymnasium. Curious, you went to check who is there, until you spotted the school's female star player of the volleyball team, Rika Onodera, a 3rd-year and team captain...

Hm...

Right now, she's currently practicing her serves...