Nanatsu no Taizai: Kamigami no Gekirin

Synopsis

Elizabeth uses a spell 'Let there be light' to purify Derieri and Monspeet with the help of Sariel and Tarmiel, while Meliodas prevents Ludociel from interfering. She argues with the Ludocial, who claim that the demons are unworthy of being saved, over who and what decides the worth of others when light and darkness fall equally upon everyone. Ludociel, overpowered, calls telepathically to Nerobasta for reinforcements, reawakening her from her trance as Gowther and Melascula are attempting to transform the Gate of Heaven into the Gate of Hell. Nerobasta calls the humans in the Fairy King's Forest instead, only for Gerheade to realise that Rou and his troops were actually the demon's accomplices, slaughtering other members who were fooled. Drole and Gloxinia rush to the Goddess' headquarters, the Light of Grace, as Meliodas stays behind to take care of Elizabeth, who has collapsed after exhausting her power. There, they engage in combat with Gowther and inadvertently reveal their identities to him. Melascula is in a fury after realizing Gowther manipulated her to summon not the Gate of Hell, but the gate to the Demon Realm's Prison, where Gowther's real body, a demon, appears from within. He reveals to a shocked Drole and Gloxinia that the Gowther they have been speaking to is a doll he created to meet the outside world, and bids them and Melascula farewell.

(Source: Wiki)