Age of the Spark: I Transmigrated Back from a Space Fortress

Xiao Feng, an ordinary researcher from the real world, transmigrates to the world of Robotech and fights for 18 years before dying a heroic death. He then transmigrates to the world of Fast & Furious with a fighter jet and a combat motorcycle, awakening the AllSpark System. Starting with a motorcycle, a fighter jet, and a phone, he gradually builds a multiverse-spanning Transformers army. After journeying through multiple movie worlds, he eventually returns to Robotech to complete his redemption, then goes back to the real world and builds a technological empire.