Read manga: Sakuratetsu Taiwahen

manga
Artists: FUJISAKI Ryu
Status: completed
Latest chapter: Vol.1 Chapter 1---8
Updated at: Aug 25, 2019
Summary:

[From Aku-Tenshi]:In the center on a metropolis city lies a small, shaky-looking house. A normal... Okay... Not so normal high school student, Sakura Tetsu (and his family), who works day and night relentlessly to support his family's living expenses, lives there. All is normal until one day, people from the future, alien pirates from outer space, appear. The underground kingdom claims Tetsu's land. Will he prevail in protecting his own land? Or will he surrender his land into many more invaders to come? Yes... Weirdness and insanity ensues!