Assertion: time machine | /r/AtLocation | dr. slump
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text: In Dragon Ball Xenoverse, it is revealed that Future Bulma was the first person in the history of Universe 7 to create a Time Machine (apparently ignoring the time machines that appear in Dr. Slump, presumably due to its nature as a gag manga), and Future Trunks' use of it resulted in the first time distortion in the history of Universe 7 (though not the first in the history of the Multiverse, as a time machine was created by a mortal in an advanced civilization in Universe 12 which later came into the possession of Ag).