It sounds like you're referencing specific DLC content for the Imouto Life Fantasy series from DLsite (RJ338582 is the base game, RJ011654 appears to be a DLC or related add-on).
早在2022年，游戏制作者就表示会考虑推出官方中文（官中）。参照前作的节奏，官中通常会在游戏本体稳定后推出，玩家可以保持关注。 Imouto- Life -Fantasy- DLC -RJ338582 RJ011654...
: Look up the official website or store page for "Imouto Life" and see if there's any mention of the DLC. This can provide details on what the DLC includes, how to purchase it, and system requirements if it's a PC game. It sounds like you're referencing specific DLC content
“Imouto‑Life – Fantasy” adds a fresh setting and new characters to the core Imouto‑Life experience. By focusing on daily interactions, mastering the Magic Training mini‑game, and paying close attention to each heroine’s subtle cues, you’ll be able to see every route and reach the coveted True Ending. “Imouto‑Life – Fantasy” adds a fresh setting and
本作系统方面依然搭载了前作中备受好评的和 夜袭系统 。这些系统并非流于表面的噱头，而是深度服务于角色关系与情感塑造。
The game combines fantasy RPG elements with a slice-of-life relationship sim, focusing on managing time and resources to improve your bond with your sister and companions. Expansion DLC Content Expansion DLC