Yumeutsutsu Re:Master

WARNING: Currently only available in Japanese.

Yumeutsutsu Re:Master is a girls-love adventure game set in a small game studio.
The setting is a traditional old town called Koenji, not far from the imperial capital of Tokyo, where a small game studio called Eureka Soft has set up shop.
The heroine Ai, a country girl, visits her sister Kokoro who works in a game studio.
On site at the company's office, stranger characters appear than you would ever meet in a game and one exciting day after another lies in store.
Your world will expand by the tiniest bit. The game production story begins.

Main theme: "Place of promise" by Asaka
Ending theme: "Natsukashii Machi" by Imai Asami
Ending theme: "Hana" by Azuna Riko

Cast
Ohtori Ai: Yoshioka Maya
Yanagiya Kokoro: Numakura Manami
Mugendou Saki: Tokui Aozora
Tachibana Nana: Izawa Shiori
Marie Mahler: Ikezawa Haruna
Daigo Honoka: Itou Shizuka
Banako (dog): Ohtsubo Yuka

Source: Steam Store Description