Himitsu no AiPri: Full Color Osarai 4-koma

The main characters are Himari Aozora and Mitsuki Hoshikawa, who enroll in the private Paradise Academy. Himari, who longs to be in AiPri, dreams of making 10,000 friends! She unexpectedly makes her AiPri debut?! She has a secret that she can't even tell her close friend, Mitsuki! However, it seems Mitsuki holds a secret of her own as well...

(Source: Shogakukan, translated)