[Bungo Stray Dogs + FGO] The Eternal City of Seven Days

???Day one: They meet. Day two: They get acquainted. Day three: They become close. Day four: They understand each other. Day five: They fall in love. Day six: They love each other. Day seven, day seven... They part. The black-haired young man smiles. The white bandages seem tinged with blood, and his violet eyes are soaked in darkness. So this is it. The reason I've clung to life for endless ages was nothing more than this simple story. CP: The world's living black sludge X The last savior of this world A girl who dies on the seventh day no matter what, and a wandering soul trapped in these seven days. The girl who wanted more than anything to live died. The man who wanted more than anything to die struggled to stay alive. And I was only just starting to like this world a little~ Lostbelt: Yokohama, the City of Wandering Reincarnation, an endless seven days. I've suddenly become a fan of Dazai, haha. I think the world's black sludge and the savior go together so well. It'd probably go something like this: Black Sludge: "Why can you always find me at just the right moment?" Gudao: "So stop trying to die in front of me, you idiot. When you look at me like you're asking for help, how could I possibly turn away?" Theme: Love and redemption