I waited for this series for so long I literally forgot the plot and who’s who.
Boy is MC, returned to earth after being the hero and defeating the demon king in isekai world.
Shrine girl is his classmate, her family has secret traditional demon hunting magic. MC and her have been gradually getting closer and she eventually learns his backstory. Her family raised her to be a sacrifice for a Japanese demon, but MC saved her.
Winged girl is a saintess from the Catholic church, which happens to have their own kind of magic. I think she was sent to pretend to be the shrine girl's classmate and spy on shrine girl's family or something, forgot details. She was also a hybrid demihuman in the isekai world that MC tried to save. But then she died and reincarnated to Earth. She became friends with MC and shrine girl, MC initially didn't reognize her but eventually did.
The group of ladies at the stairs are the winged girl's subordinates.
The guy in armor is winged girl's superior. Forgot his backstory, I think he was also reincarnated from isekai world, but only revealed to be a demon king's general in this chapter?
Bad guy wants to kill the hero or shrine girl, threatens winged girl to do it. And so this chapter sets up the confrontation between bad guy and MC.
And I think the only other important character is MC's mom, who thinks the 2 girls are in MC's harem and is encouraging it.
That's mostly what I remember, maybe got some details wrong.