so weird idea so what would happen if Archer somehow possessed prisma illya brother shirou's body? and seeing his sister become a magical girl and seeing a alternate version of him that wants to save mayu and give up on being a hero what would he do.
And also what would happen if in Fate/Zero in the summoning gone wrong like
what if Kiritsugu summon assassin Emiya aka himself,
and Tokiomi summon Ishtar/Rin
and Kariya summon BB (sakura)
and waver summon Lord El Melloi II
and Kirei summon Kotomine shirou wouldn't that be fun.