Anime Crossover: Hello, Goodbye

It all goes back to Fate/Zero. The Holy Grail? That thing was useless long ago. From beginning to end, all I wanted was for her to win. Why? Because that's simply what I wanted.

What a feeble synopsis...

Chapters 1–21: Fate/Zero → up to chapter 55: School Life + The Quintessential Quintuplets → Guilty Crown, in progress

(At readers' suggestion, here's a note: I wrapped up the first 21 chapters hastily because I lost interest in continuing at the time. You can skip them without missing much, but I'll go back and write the Fifth Holy Grail War someday... probably. The protagonist is introverted and only acts cheeky around close friends. Think a little like Hachiman, but he won't meddle in other people's business, and he's not very socially savvy.)