[Reborn! + Monogatari Series] The Yuzuriha Monogatari

The real title of this story is The Author Has to Kneel Before Teacher Nisio Isin Every Day. Main CP: Nanaya Shichimi x Xanxus Side CP: Araragi Tsukihi x Rokudo Mukuro In an age when everyone wants to grow stronger, she does everything she can to become weaker. The former "strongest in Japan," whose spirit had been completely broken, discovers a being in this world who is even stronger than she is, and a flame that cannot be kindled. "In that case, being alive doesn't seem so bad after all..." Whenever Xanxus and Nanaya Shichimi talk, the atmosphere turns cold, and then it gets painfully twisted and disturbing if you think about it too much. "Do you want to die?" "My life belongs to you." "Good. You understand." Everyone: Nothing is more lethal than getting hurt by a couple who don't even know they're doing it... PS: The author, still trying to write a blurb, has already predicted how unpopular this story will be. I really don't have the confidence or motivation to write it, so it may be abandoned at any time. PPS: The author is a lifelong fan of Nadeshiko, so I'm furiously breaking up Araragi-kun's harem here! PPPS: In the original setting, the heroine is extremely powerful, to the point that "Mary Sue" doesn't even begin to describe her. So this story deliberately rejects many aspects of the original setting. For example, the heroine can't learn this world's flames, illusions, or other skills, and can only fight for short periods.