In scott pilgrim world and traveling to other worlds with a system - Chapter 17 - Will you come with me?

In the Toaru Kagaku no Choudenjihou (Railgun) SS series:

Set in Liberal Arts City between September 3rd to 10th, Academy City is having an exchange program with the rest of the world that allows some students to travel for this week to other places, and some students are allowed into Academy City during this time.

V.2 – Shopping Mall Demonstration

Setin Russia where Misaka Mikoto takes part in a demonstration things don’t pan as scheduled as Mikoto meets the mysterious New Light.

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The story was released in parts on limited edition DVDs and Blu-rays of the Toaru Majutsu no Index anime. The story consists of eight parts, and can easily equate to a regular Index novel in length.

In her previous life, she loved a prince who didn’t love her back. She was framed and her heart was torn out. After rebirth, she wanted to live unrestrainedly, but accidentally married Ling Chen, the Fourth Prince who was calculating, manipulative, and had bad reputation.

Conspiracy, hypocrisy, greed, framing, blackmail, she took them all one by one. Getting a big payoff for a small effort, love is like a sharp knife!

Lan Ling: Why did Wangye climb over the wall and come to my room?
Ling Chen: Why do you think I’m here?
Lan Ling: Does Wangye likes climbing to someone else’s bed in the middle of the night?
Ling Chen: Presumptuous! How is this someone else’s bed?

- Description from Novelupdates

In 2120, a massive gateway that connects Earth with the Otherworld replaced the Aels boulder in central Australia. The Earth, representative of science, and the Otherworld, representative of magic, subsequently made contact and two wars broke out. Both wars inflicted enormous damage on both sides, eventually leading them to choose peace negotiations, and thereby marking a thirty-year era of peaceful exchanges between Earth and the Otherworld.Even though both sides chose to coexist peacefully, they each coveted the other's benefits. With the impending arrival of the third inter-world war, Earth's Otherworld combat General Staff Headquarters decided to secretly dispatch an advance team to the Otherworld to conduct pre-war reconnaissance.As a hybrid of Earthlings and Otherworld elves, Luoer, after secretly studying and training for over twenty years in Haiya Academy, which specializes in cultivating hybrids of Earthlings and Otherworld inhabitants, will soon lead his squad into an exciting adventure in the unknown Otherworld.Swords and magic? No, this is a world of guns and magic!