[Anime Crossover] System Under Repair

[Blurb] I transmigrated, and ended up as Echizen Ryoma's twin older brother, Echizen Ryoya. I also came with a cold, malfunctioning System that sends me to different worlds to complete missions and earn mission points. How am I supposed to live like this? #I have to go to another world whenever I have nothing to do. How am I supposed to have fun with my little brother?# #My dad is a useless shut-in who can do nothing but play tennis. I'm worried he'll lead my little brother astray. What should I do? Help, this is urgent!# #How to raise a hard-luck kid into an all-around talent# ※ A few things to know before reading: 1. The protagonist loves to keep out of things. He's neither a womanizer nor a perfect gentleman. 2. The worlds include settings invented by the author. If you find any bugs, the author probably has a broken brain. Please forgive me. 3. This story is published exclusively on Jinjiang Literature City. Please do not repost it without permission. The author also rejects brickbats and ranking comparisons. Simply put, this is a story about a protagonist who keeps showing up in various anime worlds and staying out of the action. About the pairing: This is a clean, friendship-focused story. Pairings are all just a passing cloud! Wouldn't it be lovely if everyone just got along? Theme: