 If you liked
Bokura no
|
 ...then you might like
World Trigger
|
-Both anime has concept of multiple Earths/worlds and sci-fi based.
-Enemy from different Earth comes to this Earth and people fights it. In World Trigger,it's people in Border Defense fights with a special weapon called "trigger." In Bokurano,it's 15 kids fights with a huge robot called "Zearth"