Iwafuru Shitsuji no Nasu ga Mama

Ichibana, who is avoided by boys because she seems flamboyant and playful, is actually extremely shy and has no experience in love. Her friends are worried about her, so they call in a rental butler...! She has to train with the butler, to get used to boys, but this butler is actually a little bit mean...? (Source: Kodansha, translated)