After traveling through time, there is a portable system.
I traveled through time and got a junior gift package.
What are weapons?
Of course it is the holy sword of physics - a red paint crowbar.
Having said so much, it seems like I haven't said anything at all. Hey╮(╯▽╰)╭That's it…
(Because it was troublesome to think of a name, I borrowed it from a previous novel.)