Much thanks for picking this back up, translators! I can't believe the last chapter was last year.
For those who are asking for more of the main girl / onee-san, as someone who's eyeballed the raws up to a good point in the future, you will not only get your wish, you may get sick of seeing her.
The future is filled with vanilla scenes of the main couple to the point where it becomes repetitive, and in my opinion it gets boring. It made me wish for the previous chapters where the main character had more relationships with different girls.
Then again, I always found onee-san to be the least interesting girl, and like Kinako the most.