Very long time lurker, first time poster. This one is too short, and PDF protected so no one even bother uploading it. Enjoy. I use some random website to romanize the title. If there is something wrong with the upload, please let me know.
Oh awesome Arubain has returned? Oh no this is from an older release he did. Not bad all the mothers pregnant from his stories. I hope he finishes that grandma and son in law series.
Edit: Seems like he did https://www.dlsite.com/maniax/work/=/product_id/RJ312047.html