Ganbare! Memeko-chan

Memeko worked hard at vocational school in order to fulfill her dream of becoming an office lady. However, when she gets hired, she finds herself isolated in a department with only one coworker! While the company president always praises her work, she'll have to keep working hard in order to get the friends and office social life that she really wants.

There is also a One-shot from 2004 that was published in the same magazine.