v1.0.2: On "stage-clear" area, select MENU then LANGUAGE, pressing B sets the language to -1 and breaks text boxes
There is a member's X (formerly Twitter) account, so you can contact us there as well.
For general megamittz information, we mainly post on ノラ(nora) @nora3l . If your questions are more technical, it might be better to contact 夕多丸(yutamaru) @nekopopolon .