Because I'm not above shameless bandwagoning.

The following team has to hold off Thanos and his army, a la the Avengers in Endgame. Manga versions of all, from end of series/current versions unless otherwise noted.

- Edward and Alphonse Elric (Full Metal Alchemist)
- Han Daewi and Yu Mira (God of School) circa prior to the Ragnarok War.
- Baki and Yujiro Hanma (Grappler Baki)
- Ban and Diane (Seven Deadly Sins) circa the first story arcs they featured in. Diane does not have Gideon.
- Agito (Air Gear) circa fighting Vercingetorix at the lake. Hild is not in play.
- Killer Cyborg Genos (One Punch man) circa his first appearance.
- Nico Robin (One Piece)
- Sado "Chad" Yasutora (Bleach) crica the Hueco Mundo arc.
- Tanjiro Kamado and Nezuko (Kimetsu no Yaiba)
- Touji (Battle Angel Alita: Last Order) circa his battle with the Venusian Shapeshifter.
- Haru Glory (Groove Adventure Rave)

The Infinity Gauntlet is in play. The object is to stop Thanos from recovering it and snapping.

The IG is buried at the bottom of the ruined Avengers HQ and both teams are going for it, starting off on the battlefield on the ground.

How does this play out?