The red Isabelle represents Sakura, a young girl who wears a red skirt and features a supportive role.
The pink Corrin minion is based on her appearance in Fire Emblem Fates, who serves as the leader of the party Sakura belongs to.
The stage represents the destroyed capital plaza of Hoshido in the fifth chapter of Fates, which first features Sakura as a party member.
The second battle condition references Sakura's Shrine Maiden class, which allows her to restore a party member's HP.
Other trivia:
This spirit's Support type references Sakura's role as a member of Corrin's party in Fates.
This spirit's Poison Immunity ability further references Sakura's Shrine Maiden class, which allows her to restore a party member's HP.
