The reason why no one asks each other out because it's all platonic, obviously! Platonic hand-holding, platonic scarf sharing, platonic lovestruck red cheeks! There's no romcom in this manga.
Some of you guys are putting too much emphasis on the half elf.
I think the half elf is an isekai'd guy but is a good guy (cuz he spawned as a mob), and the isekai girl got the saintess power as per game story, and is going to make a big show of her using the power to put doubt in the religion...
It's a bittersweet feeling. I am sad that the manga ends here, but I am glad that it existed in the first place. For the next person in the not-so-far off future, I hope you enjoyed this manga as much as the rest of us did.