Yomawari-sensei: Tokubetsu-hen - Sayonara ga Ienakute

Jun, a high school girl, laments the cold relationship between her family due to the debt her mother made. Feeling lonely in her everyday life, she ends up asking a truck driver she met at her part-time job to share some stimulants with her. Jun quickly became addicted to this and started sleeping around to get money to sustain her addiction.