From the Start, I Summon Freedom Gundam and Shock the Ace Beauty

Ling Xingche's transmigration begins with a fateful encounter with Su Weiya, an SSS-rank ace agent. An accident binds their souls together. The apocalypse follows close behind, as a tide of demons devours the city. Su Weiya is ready to face them alone, but Ling Xingche stops her. “Now it's my turn to protect you.” As his words ring out, the heavens answer his summons: the blue-and-white Steel God, the Strike Freedom Gundam, tears through the sky and descends upon the world! Thus begins the legend of Longxia's greatest mecha master. His wood-type ability is the finest nourishment for mecha, while his System Shop is stocked with weapons from countless worlds. Together with his goddess, he will pilot divine machines and build a steel kingdom for humanity.