Board Thread:Questions and Answers/@comment-37294804-20181025012430/@comment-37471741-20181111015508

LuigiSonic95 wrote: I'm not really sure. You could close the game then go back in. If that doesn't work, try powering your Switch down, then turning it back on. I don't really know because I don't have a Switch. Well that was utterly useless. why bother answering if you dont know what your talking about? not only is your answer completely wrong, but anyone who has read about this even the littlest bit (from any system) would know it doesnt work that way.

to actually answer the question,

https://www.reddit.com/r/Undertale/comments/9i6dot/hard_reset_on_switch/

go to system data managment and just delete your save file. it'll be like you've never played before.