Seeping Poison is the twelfth chapter of Book II of Fire Emblem Heroes.
The five parts of this chapter are Suspicion, Scion of a Crusader, Prowling Beast, Led by the Breeze, and The Traitor.
Part 1: Suspicion
Subjective: The following part of this article is based upon the editor's personal experiences and opinions, and therefore may not be applicable for all readers.
Part 2: Scion of a Crusader
You will have 4 units on your team. You will also have 5 opponents: Quan, Ethlyn, an Emblian Sword Cavalier, an Emblian Bow Fighter, and an Emblian Thief.
Part 3: Prowling Beast
You will have 4 units on your team. You will also have 4 opponents and one boss: Helbindi, Jamke, an Emblian Lance Fighter, an Emblian Blue Cavalier, and an Emblian Red Manakete.
Part 4: Led by the Breeze
Part 5: The Traitor
You will have 4 units on your team. You will also have 7 opponents and one boss: Loki, Lewyn, Silvia, Quan, Ethlyn, Jamke, an Emblian Sword Flier, and an Emblian Lance Dragon. Enemy reinforcements will appear after at least one of the enemies are defeated.
- The music playing in the four parts of this chapter is "Uprising in Agustria" from Fire Emblem: Genealogy of the Holy War.