As Long as I'm Here, Our Friendship Can't Have a Bad Ending [Crossover]

Also known as: You All Have to Get Along! Discord, the embodiment of chaos, known as Lord Discord. The ultimate prankster, the rarest creature in Equestria and its most powerful wielder of magic, a villainous bastard who does whatever he pleases. As a friend of the Princess of Friendship, Discord swears he's decided to turn over a new leaf and be a good person [or so he claims]. To save Equestria from imminent peril! Discord is preparing to debut, ahem, to travel to other worlds and collect the energy of friendship. What, there's trouble with your friendship? Then let Discord, master of friendship, help you sort it out! How can good friends become enemies? You all have to get along! You say you're unpopular and have no friends? Leave it to me! Victim Muzan Kibutsuji: ... Please, I beg you, can you stop tormenting me? Water Hashira Giyu Tomioka: But I'm pretty popular! Friends who have gone down different paths and completely split up? That won't do! I'll bring your paths together. You all have to get along! What, your friend is already dead? Then we'll turn back time! Reborn Gojo Satoru: My feelings are complicated... Geto Suguru: ...? Are you crazy? Shoko Ieiri, returned to the age of seventeen: Why drag me into this... I can't take it. A Konoha genin abandoning his friends and defecting? That won't do! From today on, you can only get stronger by getting along with your friends. Ding! Your System is now online: Get along with your friends to become stronger! Sasuke: ... To get stronger, I'll endure! After doing all that, Discord saw that their relationships had clearly improved. He was very pleased, thinking that he truly was Discord and had done an excellent job. The real reason their relationships improved: They became comrades after gaining a common enemy in Discord. Discord, returning to his old role as a villain: Oh, come on, how could I be doing this for fun? You're overthinking it. I'm just putting their friendship through trials so it can become unbreakable! Friendship Magic Instructor: Why do I feel like your methods aren't quite right... Discord: ? Are you questioning me, a friend of the Princess of Friendship? Friendship is the most powerful magic: so says Discord, the Lord of Chaos. Everyone's relationships are purely platonic, including those between everyone besides Discord!!! [Important] Lord Discord's merciless torment of others: In this story, Discord is at the very top of the power scale, the ultimate prankster. The entire story is full of Discord tormenting other people. I'm not only going to torment the protagonist, I swear! There are some personal alterations and creative liberties. The My Little Pony setting is mostly based on my own interpretations, so please don't scrutinize it too closely. OOC is unavoidable, so I apologize in advance. No personal attacks, please. Love you all! Theme: Friendship is magic.