Natsu fucking Erza like this. Erza is smiling and blushing. The guy in the background is Jellal waiting for Erza with flowers. She is hiding and cheating on him. Erza has normal clothes on (let your imagination run free).

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 fucking Jeanne on the table as he creampie her add a little panel of him filling her up while okita walk in with a shock expression on her face