Because the description says, "become a unicorn" (ユニコーンになる), perhaps it would be best to call it as such? There's no direct translation for ものけろす as far as I'm concerned...
Because the description says, "become a unicorn" (ユニコーンになる), perhaps it would be best to call it as such? There's no direct translation for ものけろす as far as I'm concerned...