Random Transformation Starting from Digital

The otaku whose parents are not dead and who has no younger sister travels through time due to various illnesses during the Spring Festival, a family-friendly holiday, and comes to the mysterious digital world. He obtains a system that randomly selects the abilities of characters in each world, and begins a journey of mischief. I don't know how to write an introduction, and I may not be good at writing the main text. I'm a newbie. If you have any questions, you can comment on them all. Thank you. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.