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.

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

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"

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