Sigh. For the people that still don't understand what's going on on the last page, It's actually pretty obvious when you READ the manga.
Page three we are told the elves are looking for a place to settle down.
Page six says "they like what grows in the field, especially the pumpkin, radish and eggplant".
Page seven the elf girl clearly says she was told "If we come here we can get some seeds".
On the last page MC literally just gave them a bag of pumpkin, radish and eggplant seeds. He didn't want to give his seeds away because he has only recently expanded his farm (see page four), which is why he tried to resist.
I'm not sure where people are getting sex from, so far this manga has not implied any sexual activity, even once.
Also
Are people still thinking that the MC wasn't having nightly sex with Ru and Tia? All the girls decided on a "rotation" schedule for Christ's sake, lol.
Yes, after getting the seeds the girls decided on a rotation cycle. Maybe educate yourself before commenting next time, it's obvious what the girls were talking about.
https://en.wikipedia.org/wiki/Crop_rotation