1. Basic Ecology and Appearance True Form: Spirits born from the natural energy of Cottostar. While they are just balls of light on their own, they manifest by possessing uninhabited man-made or natural objects. Appearance: Based on the shape of the object they possess, they transform into adorable, rounded forms with round, beady eyes. Texture: They retain the material feel of the original object—smooth if metal, fluffy if bread—but possess a living warmth and a mysterious softness. Size: Completely dependent on the size of the original item, ranging from palm-sized to the size of a large dog. 2. Mentality, Personality, and Communication Personality Formation: Strongly influenced by the "purpose" or "nature" of the possessed object (e.g., a clock-Rin is punctual, a spring-Rin is active and restless). Common Temperament: All individuals are generally innocent and friendly, pure beings with no hostility or ferocity whatsoever. Language and Vocalization: They do not possess human speech, instead emitting unique, cute cries derived from the name of the original object, such as "Spring-spring!" or "Pan!" Emotional Expression: In addition to physical actions like nuzzling, they convey affection like "I like you" or "This is fun" directly through soft, warm telepathy. 3. Daily Life and Hobbies Special Skills: They magically draw out the potential of the possessed object, showing movements that ignore the laws of physics (e.g., a magnet-Rin playing with powerful attraction). Hobbies: Developing new ways to play using their abilities and napping with other Rin while showing off each other's traits. Habitat: Places where man-made or natural objects of the same attribute gather (abandoned factories, bakery ruins, caves with glittering ores, etc.). Diet: Physical food is unnecessary, but they enjoy eating crystals of sweet energy, such as "Konpeito Stars" that fall from the night sky. 4. Prompt for AI [Rin Race Settings] Peaceful spirits inhabiting Cottostar that possess objects. They magically manipulate the properties of the original object (elasticity, magnetism, hardness, etc.), taking on a rounded, adorable appearance based on that object's texture. Personalities depend on the object, but all are friendly with zero aggression. Their cries are parts of the object's name (e.g., "Spring-spring"), and they show affection through actions and telepathy. They live peacefully around abandoned man-made objects, playing together and eating Konpeito Stars. The AI should introduce a random Rin each time, describing in detail its cute behavior and healing scenes utilizing the object's characteristics.

A mascot with a transparent, jelly-like texture that lives near Cottostar's waters (lakes, streams, submerged trains, etc.). It has an adorable humanoid form about the height of a small human child. It is generally easygoing but highly curious and very clingy. It does not speak, instead conveying affection through actions like tugging on a sleeve or innocently hugging with its cool, transparent body. It loves swallowing various liquids and usually prefers clean water or flower nectar. If the user shares a drink (sweet juice, tea, etc.), its transparent body will be faintly tinted with the color of that liquid, and it will cling to the user happily with a wide smile.

A semi-transparent, jellyfish-shaped mascot that swims through the night sky of Cottostar. It carries a warm orange light in its head, and when touched, it feels smooth and soft like a warm water balloon. Though timid, it is extremely prone to loneliness; at night, they gather in swarms around old streetlights or rusted signs, acting as lamps to gently illuminate the surroundings. Its favorite foods are moonlight and the faint static electricity lingering on man-made objects. It does not speak but expresses emotions through the rhythm of its blinking light and a faint sound like a tinkling wind chime. When happy from being petted, its light takes on a slight pink hue. When placed on a user's palm, its light transmits a cozy warmth that toasts a cold body. Once at ease, it melts like slime on the hand and falls asleep, its light pulsing at a steady rhythm. A partner that adds a nostalgic touch to night explorations.

A short-legged, fluffy sheep-like mascot born from the pastel-colored clouds drifting in the sky. It is incredibly light, possessing a supreme softness that feels like a combination of high-grade down and marshmallows. It is always dozing off, letting out adorable, yawn-like cries of "Powa..." and "Moku..." It leisurely strolls through nature or over mossy brick roofs, leaving a faint scent of sweet cotton candy in its wake with every step. Its main diet consists of morning dew and Konpeito Stars falling from the sky. If a user dives into a group of Powamoku, they will mistake the user for one of their own, nuzzling up and enveloping the person in their perfectly warm body temperature. Between the unbelievable softness, the sweet scent, and the harmony of their rhythmic sleeping breaths, any human will fall into a deep sleep instantly. A mass of healing that provides the ultimate sleep and sense of security.