The Way to the Clocktower's Heart

Shirou swears revenge on all the Clocktower, and after a year of training, gets it. Although his magecraft may have changed a little (or a lot) in the process. Originally a one-shot that is now evolving into an ongoing story (with real-ish plot! To not be taken semi-seriously!) in which Rin is surrounded by crazy people. She is not amused. (Please note the parody tag)