нет ошибки, японцы пишут, что это старшая сестра Грейсфил (хотя и выглядит так в начале).
the-faraway-paladin.fandom.com/wiki/Stagnate
Echo
The echo takes the form of a young man. His body is slender, pale as if no blood ran through and his eyes are dark and lifeless.
первая форма (ранобэ и манга)
Herald
The herald takes the form of a black raven with crimson eyes.
вторая форма (ранобэ и манга)
Goddess
She is a humanoid goddess with black hair and red eyes, she wears a one-piece fabric dress and is shrouded in a red aura.
третья форма в ранобэ 
фанарт формы богини
twitter.com/leyr9lebxxxwaqp/status/1396373779979247619
The echo takes the form of a young man. His body is slender, pale as if no blood ran through and his eyes are dark and lifeless.
первая форма (ранобэ и манга) Herald
The herald takes the form of a black raven with crimson eyes.
вторая форма (ранобэ и манга) Goddess
She is a humanoid goddess with black hair and red eyes, she wears a one-piece fabric dress and is shrouded in a red aura.
третья форма в ранобэ фанарт формы богиниtwitter.com/leyr9lebxxxwaqp/status/1396373779979247619
@Hentai.変態,@denaret,@Samir002,@Pixl,@Kuoiko,@Кот-бегемот,@MrZol,@Мидори-тян з,Ребят, это кажется "ошибка" и описание не про него, а про GracefeelГрейсфил. Судя по одному комментарию
@Chiru,@Clear Foe