A lovely Vanilla release by SAVAN? Amazing.
What a lovely set-up, too. The way she describes her love and relationship with a man who has supported her the entire time, and the way we are then shown how he did so and how they got to this point in their relationship...I love it.
And although work piled on and he said he might have to miss her birthday, he did his best to finish up and actually made it, even if he was a little late. Good job, dude, mad respect.
They seem so happy together at that end, and they're even getting married. I'm sure even happier memories await this lovely couple and I'm happy for them.
Kairakuten 2020-07 was released shortly before SAVAN's latest book came out. So this serves as not only a standalone release, but as advertisment for the new book.
Rinka looks like a character from SAVAN's fantasy shounen manga (it's serialized in Ultra Jump if you're wondering). Perhaps SAVAN made a 500 IQ play and made this release such that it draws both hentai and shounen fans. That way, SAVAN's new book gets promoted to a wider audience. Either way, great stuff from SAVAN!
(Here's the product page to the book on Wanimagazine's website:
https://www.wani.com/product/4862697119/ )
Hmm...You say this story will serve as an advertisement for Savan's new book. After looking at the webpage of link you provided, that'll be an interesting move.
Short and to-the-point, this is definitely one instance where ... wait for it ... "It's GOOD To Be The KI ... er, PRODUCER." (under breath, Takayuki, you Lucky Bastard {GRR})