The characters are fully voiced by experienced talent, which helps ground the "bittersweet" tone of the story.

The game is well-known for its uncensored and long-form adult scenes that are completely animated with a high level of detail.

Reviewers frequently highlight the "summer vibe," enhanced by its art style and the occasional use of music that characters play within the story itself.

Beyond the romance, it features a slow-burn mystery involving an amnesiac protagonist and a family secret, which players have praised for its unexpected emotional depth.

A standout feature of is its high-quality, full-screen animation , which moves it away from standard static visual novels and closer to an "interactive anime" experience.

Unlike many visual novels that rely on still images (CGs), this title features fluid, hand-drawn animation for almost every sequence, including transitions like swaying grass and drifting clouds.

Are you more interested in the or the specific technical features of the animation? Sisters: Last Day of Summer on Steam

This title is currently available on platforms like Steam and JAST USA.