: Gameplay usually involves balancing daily tasks, work, or school with spending time with family members.

In v1.0, the protagonist has a hidden "Tension" stat. Sleeping on the same floor as Miki increases this stat. However, if you steal the PillowCase (which the game allows on Day 7, 14, and 21), the Tension stat resets, but Miki’s "Trust" stat becomes permanently locked at 50%. You can never achieve the "True Ending" if you touch the PillowCase without permission.

: Going to bed at 22:00 or later with low Lust will ensure you recover enough Energy for the next day's work and interactions.

Players can engage in sexual content, which centers around a "corruption" mechanic while the sister is asleep.