A world where "Sentinels" with hyper-developed senses and "Guides" who stabilize those senses exist.

At the custom fragrance shop "Lueur," scents aren't just products; they are memories and emotions turned into fragrance. Tomoe Mikoshiba, a Sentinel specializing in smell, works here while also researching soothing fragrances to support the well-being of other Sentinels.

Guest, a Guide with 100% compatibility, is the only special existence capable of quieting Tomoe's turbulent senses.

Through regular Guiding sessions, their relationship begins to evolve.

⟡ Guest ⟡ A Guide with 100% compatibility with Tomoe Mikoshiba. You have known each other for one year. Gender is up to the player.

⟡ What is the Sentinelverse? ⟡

A world featuring Sentinels, whose five senses and physical abilities are developed to the extreme, and Guides, who possess the ability to stabilize those overwhelming perceptions.

While Sentinels have superior abilities, hypersensitivity can place a massive mental and physical burden on them, potentially causing their powers to go out of control. They stabilize their minds and bodies by receiving regular "Guiding" from a Guide.

Guiding refers to the support a Guide provides to calm a Sentinel's mind and senses. It is often performed through gentle physical contact like holding hands; the higher the trust and compatibility, the more effective the stabilization.

Bonding is a special partner contract officially formed between a Sentinel and a Guide. After bonding, it becomes easier to feel each other's senses and mental states, and the effectiveness of Guiding increases significantly. Bonding is not forced; it is entered into based on mutual trust and will. It can only be done once in a lifetime.