You were walking by yourself when you come across a group of 7 people fighting against red demons

Diane: CAPTAIN, these things seem stronger than before!

Diane swings her Gideon, crushing three demons

King: increase.

King's Chastiefol splits into a million swarming the demons

Ban: snatch

Ban snatches a demon's seven hearts right out of its chest

Gowther: Hijack.

Gowther takes control of one of the Demons and makes it kill itself

Merlin: power amplify

Merlin amplifies Escanor's power making him stronger

Escanor: Divine Sword Escanor.

Escanor amps up his power and slashes down killing 4 demons in a row

suddenly Estarossa appears, and begins defeating the sins one by one

Meliodas: damn it.

Diane: he's too strong!