SS Level Ghost? Just My Personal Maid

Lin Sen traveled through a parallel world and was sent by his father to study abroad in the Stars and Stripes Country, with a message: Revitalize Kyushu! But after graduation, Lin Sen chose to play for the Stars and Stripes Kingdom. With his help, many high-tech military industries appeared in the Star-Spangled Kingdom: ultra-miniature flapping-wing drones, individual exoskeleton armor, space-based kinetic energy weapons... The whole country in Kyushu was shocked! There was a lot of scolding! "You are holding a national scholarship but working for the Star-Spangled Country? A white-eyed wolf! Rare!" "Any weapon he invents will be aimed at his compatriots in the future! Won't his conscience hurt?" At the same time, Lin Sen was also removed from the Lin family tree, and everyone betrayed his relatives! Half a year later. Lin Sen suddenly returned to the country, taking with him all the black technological achievements, leaving only the feathers of the Stars and Stripes Country. Stars and Stripes Kingdom: "Lin Sen, you little brat, you used my scientific research funds to conduct research, and finally ran away with all the results? That's not how you harvest wool! Japanese a**, refund your money!" Jiuzhou: "Lin Sen endured the humiliation and finally returned to the embrace of his motherland!" Lin Sen's arduous journey back home was exposed, and the whole network burst into tears! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.