UnderPin

After loosing their mom in an accident Frisk, or "Pinny", enters in city wide tournament in hopes they'll get just far enough to meet their other half of their family. Yet many others are looking to beat everyone else to get the top prize of millions of dollars and benefits from the Lucid Pin Corporation. They hope that a simple Red Soul Pin will make the cut and help them get far enough.
(This is my own AU that not fully use the Undertale layout, but will reuse characters from it.)