Scanned and Edited by Rizel

https://www.melonbooks.co.jp/detail/detail.php?product_id=2736533

[Synopsis]

Moeka, a runaway girl, stays at the house of her uncle where Juria is staying and does whatever she wants, wreaking havoc on the house.
When her uncle returns from a business trip, she doesn't listen to him and instead tries to blackmail him by using Juria as a bait...
But there's no way he'll listen to her threats...

Base +25, nuts987 +13

"The Old Man Striving to Change the World VS Kuro Gal" Trilogy, now Tetralogy:
Chapter 1: https://e-hentai.org/g/1890844/f9801b1b8d/ (untranslated)
Chapter 2: https://e-hentai.org/g/3074490/164b5a5284/
Chapter 3: https://e-hentai.org/g/2916052/c575457579/
Extras 1-3: https://e-hentai.org/g/3033442/70dfd4196b/ (untranslated)
Chapter 4: https://e-hentai.org/g/1890844/f9801b1b8d/ (untranslated) <- You are here

Base +9

@B1u3z your chapter 1 and 4 are identical.

Base +8