Undertale: Wear Your Own Character

Invincible+All Heavenly Flow (The worlds I have been to so far: an ordinary world with an outbreak of zombie viruses, a special world, a world with beasts, Peking Opera Cat, but I didn't plan to write much, I just wrote a few pictures and stopped writing, basically just for speedrunning, that's it, of course, it's called Peking Opera Cat here) Our protagonist Bai Su is a fan of Undertale and many games, so he relies on the technology he has learned for many years and his own hobbies and imagination to create an AU. However, because he was watching TV, the TV suddenly exploded and was taken away by a system. In the AU he created, he wanted to take him to seize Sams, but this sans is not the other sans, so what interesting things will happen next? (Then, this cover is my own imagination, but because my painting skills are really beyond that, please use this cover as a reference) (Finally, this is the first book written by the author, and his experience is still insufficient, so I would like to ask for your advice, more gifts and reminders for updates. I would like to thank you all for your help in advance (≧∇≦)!)