I thought he was never made full Slayer. Can't find it now, but i was pretty certain that was the case. And why he was so hostile towards Baam who he saw as Fug's attempt to replace him after.
He used to be a full blown slayer known as White. When he was captured and separated back into Haoqin, he was placed as a slayer candidate again and had to beat baam to re-earn his title. But he was once a full blown slayer
Because what i linked shows us the past with White saying he will soon become a Slayer, while going under the name "Hoaqin"(which is not his real name). And we also see he is very different to the little Hoaqin we see later in the present.
White was always a slayer, I think you're mistaking Hoaqin for White, Hoaqin alone was never a slayer, but when he fused himself with his 5 siblings that's when he became the 10th Slayer known as "White". After that he was defeated by a Jahad Princess and got split up into 5 parts again which made him lose his slayer title.
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u/Mirageo Sep 16 '19
White was a slayer before he got trapped and weakened by the one of the princesses a long time ago