I Asked You to Modify the Mecha Girl, Not Install a Star-Destroying Cannon!

[Multiple heroines] [Mecha] [System] [Combat and romance]

Ye Mingsheng, the foremost mecha engineer in human civilization, transmigrates to a world where girls can transform into mecha.

While other engineers nervously assemble standard modules, Ye Mingsheng is already custom-building legendary ones.

While other mecha pilots are still studying combat techniques, Ye Mingsheng has already automated mecha modules.

Faced with a colossal, nation-level war mecha, Ye Mingsheng simply equips his mecha girl with an anti-starship cannon.

When others question him, Ye Mingsheng says, “Vera! Mecha, arm up!”