The safest and most supportive way to obtain the game and its official updates/DLC is through the official DLsite store page (requires an account and may have regional restrictions). To help you further, could you clarify:
The appeal of "Risou no Otousan Tomodachi" lies in its subversion of typical "win-state" gaming. Rather than chasing scores, the player inhabits a "guiding household role". This creates a unique digital domesticity where "quiet moments and casual encounters" are treated with the same weight as major plot points. risou no otousan tomodachi dlc rj01213396 repack