Koi

Cosmic rarity · officially confirmed

Overview

The Cosmic-rarity Koi added in Update #1. The second Cosmic animal hatched from the Cherry Blossom Egg in the Cherry Blossom Biome.

Rarity	Cosmic
Source egg	Cherry Blossom Egg New in Update
Role	High-tier rarity animal (Cosmic class)

Enter the Cherry Blossom Biome (added in Update #1) and hatch from a Cherry Blossom Egg.
Eggs hatch even while you are offline — fill your base before logging out.
Use Sakura Crystals from The Great Bloom event in the incubator to mutate your eggs.

Confirmed via the official Discord announcements channel (Update #1, published 2026-08-22).
The patch lists per-pet rarity and source only — income, weight and size values are not published.
Mutation layers unlocked via the incubator include Bloom and Spirit Bloom.

The Cosmic-rarity Snow Owl added in Update #1. One of two Cosmic animals hatched from the Cherry Blossom Egg in the Cherry Blossom Biome.

The Secret-rarity Stag added in Update #1. A top-tier hatch from the Cherry Blossom Egg in the Cherry Blossom Biome.