This specific file is often used for running the game on mobile or as a localized PC version. Living With Sister: Monochrome Fantasy on Steam

: There are turn-based battles at the guild where you must defeat bosses to keep the local guild from closing. How to Use "1.07.2_EN.rar"

: Interactions at home—like cooking, bathing, or talking—build "Trust" and "Interest" stats, which evolve your relationship from "Normal Siblings" to more intimate stages.

: You manage your time between guild quests (to earn money and combat stats) and home life.

The game is a daily life simulator featuring hand-drawn, black-and-white (monochrome) art. You play as an older brother who must care for his sickly younger sister while working for an adventurers' guild to pay the bills and search for a cure for her illness.