Crossover Anime: Picking up Medea at the Start

(In November 1994, a disaster struck Fuyuki City. Before the disaster, the Tohsaka family had their second daughter, Sakura, adopted by distant relatives, the Edelfelt family.)
(In June 1998, Ryougi Shiki remained asleep and had not yet awakened.)
(Kiritsugu Emiya was confirmed dead in 1999.)
Now it is February 2004. Roland is sitting in his room, looking at the Command Seals on the back of his hand, and letting out a long sigh.
The Fifth Holy Grail War was about to break out, and as soon as he transmigrated, he found a blood-red Command Seal on the back of his left hand.