[Important notice: The previous volume is a discarded draft because it strayed from the outline. I only found the right direction after writing for a while, so you can skip straight to Volume Two.]
[The main world is Fairy Tail. He'll travel through worlds such as Genshin Impact, Honkai, and Honkai: Star Rail, depending on the author's interests and reader suggestions, but the main plot remains in Fairy Tail. The other worlds will only appear occasionally.]
[Lucy is the sole heroine for now. That may change as the story develops. This is as far as I've planned, so please excuse the weak romance writing.]
Serious synopsis:
An ultimate weapon born for revenge and a guild that spends every day brawling and getting up to no good: what sparks will fly when they collide? Can he, a weapon, develop genuine feelings and find a place to call home?
Regular synopsis:
On July 7, 777, Seven joined Fairy Tail and found a family. Greed, lust, gluttony, sloth, and the other deadly sins make up most of his personality, but he's still a good mage, and the guild members have a pretty good opinion of him.
Makarov: “Seven is a good kid. He's more loyal to the guild than anyone.”
Erza: “I don't approve of Seven's sense of justice, but I can't refute it, either. And he's a companion I'd trust with my life!”
Natsu: “Seven? He's my big brother forever!”
Gildarts: “Oh? Seven? He's my brother in every way that counts, even if we don't share parents. Anyway, enough talk. I'm off to check out the study materials my brother gave me.”
…
Seven: “You want to hire me? You've got a good eye. But… it'll cost extra!”
Regardless of whether the first volume or the second volume is a mess, a batch of ideas should be restarted. After all, Fairy Tail is becoming less and less.