"A spirit found in swamps and other grimy places. Its stench is truly unbearable."
Boo, also known as Gloomy, are mean-spirited, poison seirei who are recruited by giving up a certain amount of Shibina tails. Boo can be selected as the starter Hero/Heroine element for a beginner difficulty. Cabernet Cheaptrick also uses the poison seirei. Its special power causes additional damage from poison.

They appear as a bottle of purple liquid in-game.

Recruit Points Edit

Seirei No. Location Requirement
1 Drawing room in Remittsu Royal Palace Guide a Dodo in front of the love hunter
2 Edge of Rehikafu Swamp 3 10 Shibina (Numb) tails
3 Rehikafu Swamp 15 Numb tails
4 Basorimo Village 20 Numb tails
5 Moginasu Lair 50 Numb tails
6 Aquabit Castle 4 30 Numb tails
7 Pyramid 7 80 Numb tails

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