Ninja class buffs can be dispelled
Summary
The Ninja class skills Soul and Cast-off Cicada Shell can be dispelled.
Expected result
According to the classic wiki for the Dispel skill, Ninja's Soul (Ninja Aura) should not be dispellable.
The wiki for Cicada also states that the Cicada buff cannot be dispelled.
https://irowiki.org/classic/Dispell
https://irowiki.org/classic/Cicada_Skin_Shed
There are certain buffs which can not be dispelled:
Chemical Protection skills of Alchemists
Divest status of Rogue skills
Enchant Deadly Poison
Hindsight
Ninja Aura
Players using GTB cannot be dispelled
Power Up
Stalkers buffed with the Spirit of Rogue are immune
Soul Linkers are naturally immune
Shattering Strike
TaeKwon Kid's Mild Wind, Tumbling, and kick stances
TaeKwon Master's Heat skills
Walking Speed boost gained from items
Cart Boost
Food Items purchased from the Kafra Shop
Gunslinger's self buffs