Nanatsu no Taizai: Tsumi no Kokuhaku Dennou Grimoire!
Japanese title: 七つの大罪 「罪の告白 電脳グリモワール!」
Type: ONA
Episodes: 10
Source: Other
Genres: Comedy
Studios: KIZAWA Studio
Duration: 5 min per ep
Rating: PG-13 - Teens 13 or older

Animated audio-dramas released online.