XEBEC M2 anime

Hitohira

TV / 12 eps / Spring 2007 / Manga

A transfer student Asai Mugi is a painfully shy girl. She is so shy that she can't speak when she becomes seriously nervous. However, for some reason, she is spotted and recruited as a member of the drama club. (Source: AnimeNfo)

Zombie-Loan

Special / 2 eps / Spring 2008 / Manga

The series was originally planned to be 20+ episodes but was cut short due to unknown circumstances. These specials released on the 7th DVD volume continue the story.

PetoPeto-san

TV / 13 eps / Summer 2005 / Light novel

After centuries of antagonism and misunderstanding, the Japanese finally welcome youkai into their community. In an attempt at species integration, normal children begin attending school with paranormal creatures who are quite humanoid. Shingo Ohashi finds himself developing feelings for Hatoko "Petoko" Fujimura, a half-youkai half-human girl whose powers are: uncontrollable cuteness to enchant those around her (similar to a low-power succubus), get stuck to any other person who touches her bare flesh (cured by her falling asleep), and the ability to disappear even at the molecular stage (which she can for the most part control). (Source: The Anime Encyclopedia)