Hack/.hack//Liminality

From Animepedia

An OVA series which relate to the ps2/

episodes 1. In the case of Mai Minase

2. .hack//Infection

3. In the Case of Yuki Aihara

4. .hack//Mutation

5. In the Case of Kyoko Tohno

6. .hack//Outbreak

7. Trismegistus

8. .hack//Quarantine

Special .hack//GIFT