Let's Have Sex with Mob NPCs! - A Soul Born from Darkness

I took this screen shot from Kakenuke★Forward to Our Sparking Youth! (vndb.org). The above character is a semi-generic background character, the unnamed manager at the protagonist's work place. I'm convinced the character artwork is not original to this VN but I can't remember for the life of me where else I've seen it. I went through the list of all other VN's produced by Saga Planet I've played and am still coming up short. He may not necessarily be wearing the same outfit in whatever other source I'm failing to remember.
 
Can anybody else come up with a source for this character?

The protagonist decides to modify a certain game and have as much erotic fun as he can with the NPCs inside.

Tonight, I'm gonna get my friend to fuck my girlfriend...
Akitoshi, a cuck at heart, wants to see his straight-laced, art student girlfriend Minatsu get fucked by another man no matter what!!
He can't hold back the desire.

Upon discussing this with his childhood friend, Haruki...
Haruki: “Got it.”
Haruki: “So you want me to fuck Minatsu-chan?”
Akitoshi: “Yeah. I'm begging you.”
Haruki: “For real? Like, are you serious?”
Akitoshi: “I’m always serious.”
Haruki: "You... you're outta your mind..."
And so, after the three of them had dinner, the two idiots tried their best to get her in the mood.

Realistic Sister-Brother Sex Sweet, perverted, brother-love... Nothing like that at all.
A "normal older sister" finds herself trapped with her younger brother...
"A room they can't get out of unless they have sex"!?
 
◆◆Features◆◆
・Even though they're just an ordinary brother and sister, they end up having sex!
・Carefully crafted H-scenes with plenty of text, variations, and sound!
・A kind and reliable older woman will pamper you to your heart's content!
 
Character Introduction
"Misaki Kisaragi"
She's a kind and caring older sister. But she can be incredibly scary when angry.
Her consideration for her brother is purely sibling/family-like, not brother-love, but a brother-like feeling.
Of course, she's never even considered having sex with her brother.
 
Game Content
This is a combat-free RPG made with RPG Maker MZ.
Explore the "room you can't get out of unless you have sex" and try to escape together with your older sister.
The story is set in a creepy room and has a heavy theme of incest, but it's not at all dark!
The brother and sister work together to escape this confined space.
There are lots of variations! Laughing over silly things, embarrassed by the sex they have together, and getting angry at their brother for going too far...The sister's expressions change dramatically.
There's also a lot of text!! The text for each erotic scene has been carefully and thoroughly created, and Imagine what would happen if an adolescent brother and sister actually had sex...!?
The older sister reluctantly accepts her brother in order to escape, and the younger brother's head is filled with the softness of the woman he's touching for the first time...
Enjoy the realistic action between these two. For lovers of sister-brother incest
This work is recommended for fans of sister-brother, incest, and older-person stories. Be sure to check out this heartwarming story about a close brother and sister... It will warm your heart and your body.

This game is set in a fantasy world where you are trapped in a room where you can't escape unless you have sex with an elf, a nun, or a beast girl.
You can also enjoy sex with tentacle monsters and the classic goblin.
The game emphasizes gentlemanly elements over gameplay.