Emiya shirou saber face sages
This will take place in the emiya households shirou will be fucking on of the girl who has the saber face traits while another walk in on them during the act like in the reference picture I put down on
Shirou is have sex with okita standing doggie styled against the wall while he creampie her add a panel to show penetration and her getting creampie while saber alter walk in with a deadpanned expression on her face