Gekidan Nanatsu no Taizai is 13 episodes lasting about 2 minutes each. The ONA itself does not introduce anything new and consists of some dialogue between the cast members. As a fan of Nanatsu no Taizai, it's always nice to hear the cast's voices again and the art (all chibis) is nice enough too. Overall, it doesn't take too much time, less than half an hour in total, so if you like the original give this a quick watch. At the time of writing, Dragon's Judgement (Nanatsu no Taizai: Fundo no Shinpan) is coming to a close and its host of new characters, commandments and archangels sadlydo not make an appearance.

I gave it a 5/10.