Yojouhan no Ibara Hime

Yojouhan no Ibara Hime summary:

Shinra has a mother who rarely comes home. Everyday, she pinches her pennies just to survive. Rai, a popular guy from her school keeps bothering her, and she’s getting sexually harassed by the manager at her part-time job. After finally coming home after 2 months, Shinra’s mom promises to stay with her. Rai unexpectedly shows up at Shinra’s part-time job and sees her being sexually harassed. He urges her to quit, but she refuses. Shinra comes home only to find out that her mother has disappeared once again