Tears of a Lamb(2002)

Hitsuji no Namida

Freshman Kei has one thing on her mind: getting into the apartment of Kanzaki, a fellow classmate. She's searching for something she lost there two tenants ago. This strange connection begins a friendship between two students who have each suffered their own separate trauma. Can Kei and Kanzaki help each other get over the secrets that are tearing them apart?

(Source: CMX)