Mr.sitthikorn in this au is a weapon shop keeper also sells the power-up items such as mushrooms,cat bell,bunny carrot and etc.,he's 24 years old,no family but is totally fine for him,he loves to listening to music a lot specially the game soundtracks(undertale,deltarune,mario64),he uses 2 guns for himself(ice flower and fire flower gun to protect himself and the rifle to kill himself if he wants to)