Avengers / Alien Chuunibyou

The protagonist is a girl named Liu Xiao. This girl has had a pretty rotten time of it. She was living just fine in her own world, then she transmigrated. And if transmigrating weren't bad enough, she turned into an alien. Being in a foreign land made her terribly homesick, and all she wanted was to go back home for a visit. Well, technology was pretty advanced on this alien planet, so she worked hard, with going home as her goal. Who could have guessed the planet was so strict about its social hierarchy? If you wanted to use the most advanced technology, you had to be rich, powerful, and high-ranking. There was nothing for it but to work hard. So Liu Xiao worked hard, and then worked even harder, until she became the leader of her region. But being a regional leader still didn't let her use the most advanced technology. So she worked harder and fought on. To become the leader of a planet where she could use the most advanced technology, she went ahead and overthrew the feudal ruling class. At last, she became the planetary leader and could finally go home. So what was she waiting for? She brought her spoils of war and her underlings along to return home in glory. Who could have guessed! Different place, different culture and customs! Liu Xiao had been subtly influenced by the alien planet and had forgotten how brutal aliens were by nature. What should have been a lovely trip home turned into an alien invasion of Earth. The whole world resisted. Only after Liu Xiao arrived did she discover that, damn it, not only was this a different planet, it was a different world altogether! Damn it, she'd never see her family again! QAQAQAQAQ Despairing, Lin Xiao gave up resisting. The military forces of various countries took her down, imprisoned her, and performed live dissections and research experiments on her. Until... in episode 14 of Agents of S.H.I.E.L.D., Coulson and his team blew up the laboratory holding the upper half of her body, and she finally woke up again.