Dagger 1-3 Two Skies, One War

Dagger 1-3: Two Skies, One War
Genshin Impact x Modern Military / Isekai / Action-Drama*

When a black-ops raid under Manhattan goes catastrophically wrong, USMC special operations team Dagger 1-3 don't die-they fall.

Straight into Teyvat.

MSgt Gideon Henderson - the quiet, stubborn leader who refuses to lose anyone else.
GySgt Dylan Murphy - engineer, smartass, and the guy who can turn anything into a bomb.
SSgt Simone "Gecko" Espina - recon sniper, chaos gremlin, professional problem.
GySgt Alyssa "Blaze" Carter - medic, sniper, and Gideon's secretly-related little sister.

Armed with nothing but their rifles, training, and some very bad language, Dagger 1-3 crash headfirst into a world of Visions, Archons, Abyss Mages-and new allies like Lumine, Kokomi, Yae Miko, Raiden Ei and more.

While the Marines try to survive hilichurls and diplomacy with gods, a familiar ghost from Earth moves in the shadows: Spectre, the rogue CIA asset who dragged them into this mess. Now he's selling Earth weapons to the Fatui-APCs, T-90 tanks, Juggernauts, rocket artillery-turning Teyvat into his private war sandbox.

As Gideon's squad fights to protect places like Mondstadt, Liyue, Inazuma, Watatsumi Island, the truth reaches home.
The Pentagon wakes up. DEFCON shifts. And for the first time in history, AC-130s, F-18s, Rangers, and SEALs are sent... to another world.

Two skies. One war.
A ruined Chasm, a dying Marine saved by a Ruin Serpent, a desperate stand on Watatsumi, and a bridge of lightning cut open by the Raiden Shogun herself.

Dagger 1-3 just wanted to finish a mission and go home.
Now they're the only thing standing between two worlds and a war neither is ready for.

This is their story-from the lab in Manhattan, to the coral shores of Watatsumi, all the way back to the White House.