Thunder 3 volume 2

In the parallel world, Pyontaro and his pals continue to search for a way to rescue Futaba from her alien abductors. After narrowly saving some people in town, the trio is set upon by a group of armed aliens, but then… Pyontaro unleashes a devastating attack of his own! Meanwhile, aboard the alien spaceship, an even more fearsome alien squadron mobilizes to recapture Futaba after she escapes! And, as the alien invasion and subsequent subjugation of the city's residents takes a turn for the worse, an encounter between the Small Three and a certain man promises to turn the tides of fate!

Volume 2 of the Thunder 3 manga series by Yuki Ikeda.