The main characters Himari Aozora and Mitsuki Hoshikawa have entered Private Paradise Academy. Himari's dream is to make 10,000 friends! Himari unexpectedly makes her AiPri debut!? She's discovered a "secret" that she can't even tell her best friend, Mitsuki! However, it seems that Mitsuki also has some kind of "secret''...

(Source: Official Website, translated)