Twin Sister Android's Sexual Social Contribution

During the summer vacation when his parents are away, he begins living with his step-sister.

You've been appointed leader of the Sexual Handling Department.

Your cute colleague, Shinano Sato, is the most fuckable woman in the whole company, but you are plagued by the fact you cannot satisfy your own needs...

One day, you realize that Shinano is also a member of the Sexual Handling Department and an idea forms in your mind.
Using your position, you start to pull some long shifts, late into the night with your hot coworker...

Left alone in the vast mansion while our parents were away on business, it was just me and my sister.
The quiet mansion gradually filled with a sweet yet dangerous atmosphere.
Even she, who was usually cold toward me, showed a different side of herself on those nights alone together.
Her adorable sleeping form, wrapped in loose pajamas. The soft curve of her chest peeking out from the hem, her smooth white skin—everything about her sent my heart racing.
Every time I felt her vulnerable, sweet breath, the forbidden desire I had suppressed deep within my heart began to stir.
“I can’t take it anymore…”
Overwhelmed by uncontrollable feelings, I finally break the taboo of sibling relations and resolve to claim my sister as my own. However, during this summer vacation, not only my sister but also the attractive girls around me seem to harbor secret feelings for me. A one-month limited cohabitation—can I suppress the throbbing of my heart tainted by sin?
The period is just one month. The forbidden sibling cohabitation begins now—♡

Pero is an old man who, through some strange turn of events, ends up being the twins’ licking dog.
Today, he is woken up from his nap once again and forced to help satisfy the twins’ sexual needs.

Character Introduction
 
Kon-chan
The energetic older twin sister
She's a pure girl who chats enthusiastically with the protagonist, even though they suddenly ended up living together.
She's always playing, and if you invite her to play games, she'll smile and play along.
 
Ren-chan
Unlike her energetic older sister, Ren-chan is the cool and collected younger twin sister.
She's wary of the protagonist, even though they suddenly ended up living together, and doesn't talk much.
She locks herself in her room at night and is very cautious.
 
--Game Contents--
Map Action: Select a map to decide your daily actions. Go to shops, work out, and talk to characters to make friends.
 
--Skill Unlocking--
Earn skills using skill points earned through training or events! To acquire skills, you also need affinity and slutty points.
 
--Erotic Situations--
First Orgasm, Squirting, Training, Sleep, Orgasm Peeing, Creampie Orgasm, Breast Fondling, Fingering, Stroking, Fingering, Cunnilingus, Vibrator, Electric Massager, Vibrator
 
Change hairstyles with accessories, add cat ears, tights, handcuffs, leg irons, and even a blindfold or gag.
 
--Events--
- Flat Chest Flash
- Peeping While Getting Changed in the Bath
- Peeping on First Masturbation, etc.