Overview
Light-Devouring Buzz (嗜光嗡嗡) is a Dark and Light dual-type spirit exclusive to Season 1 of Roco Kingdom: World. Its lore describes an abdominal organ that reacts only to light-type energy, which the spirit uses both to defend itself and to trigger its evolution.
Evolution
Light-Devouring Buzz evolves into Light-Stealing Mosquito (窃光蚊) after defeating a sufficient number of Light-type spirits in combat. The requirement is most easily completed in areas with abundant Light-type encounters, with Yaoyue Peak (岚语峰) being the commonly cited farming zone.
The final form Light-Stealing Mosquito gains the passive Type Analysis (属性解析), which boosts Light-type skill damage based on the number of distinct element types the target knows moves for. The mosquito also gains an exploration ability that scans nearby terrain and auto-marks hidden gathering nodes during overworld play.
How to Obtain
Light-Devouring Buzz is a Season 1 exclusive encounter triggered through the Nightmare Shackles system. It cannot be purchased or hatched outside of season content.
Sanctuary Fruit Pair
Fruit pair: Two pure Dark-type sanctuary fruits (Evil + Evil).
Component families: The farming rotation uses Demon Wolf (恶魔狼) and Xiaoye (小夜) as the two Dark-type anchors.
Prerequisites: Both component fruits are gated behind quest and hidden-area content, which makes this pair the hardest Season 1 sanctuary to set up.
Competitive Notes
Offensive coverage: Dark hits Poison, Cute, and Ghost; Light hits Ghost, Phantom, and all Divine types. The pair is one of the few S1 options with strong coverage against Divine spirits.
Defensive weaknesses: The shared typing takes extra damage from Fighting, Evil, and Ghost. Defensive partners that cover Fighting are especially valuable.
Exploration utility: The node-scanning passive on the evolved form is a rare quality-of-life effect and is one reason to prioritize evolution even before optimizing battle stats.
Tips
Unlock Demon Wolf and Xiaoye first. Without them, the required Dark-type sanctuary pair cannot be assembled.
Farm Light-type spirits at Yaoyue Peak to hit the evolution count faster than any other zone allows.
A Season 1 shiny variant exists. Because Dark-type fruit access is the bottleneck, prioritize the shiny hunt only after the sanctuary pair is stable.
See Also
Spirits - full roster
Season 1: Dark Night Collecting Light - season context
Demon Wolf - required sanctuary component
Element Types - Dark and Light matchups