The principle of 'quantitative change leading to qualitative change' proves this: as long as I fawn over enough heroines, I'll eventually be able to win over at least one of them. With this thought in mind, veteran simp Kitahara Kaede went further and further down the path of simping, only to find, upon looking back… that all the heroines were actually secretly in love with him?

Illya: "Yu, you went to another world to gain the power to save me, right?" Emiya Yu: "That's right." Chloe & Miyu: "Then what's with all these girls sitting on the sofa?" Upon hearing this, Emiya Yu looked at the Burst Mage, the Blue Ribbon Goddess, the Gluttonous Sisters, and the Elf Family sitting on the sofa, and said naturally: "Oh~ my dear Illya, Miyu, and Chloe (Kuro), saving the world and chasing girls don't conflict, do they?"