Once «Hollow Body» is activated, the user becomes completely transparent and thus cannot be seen by either players or monsters. Unlike a common Sylph hiding spell, «Hollow Body» allows the user to freely move around without losing the invisibility status. However, like the usual Sylph spell, Hollow Body only makes the user invisible, thus any loud sound may alert players and monsters to the user's presence. However, unlike in the case of the concealment spell, this does not terminate the Hollow Body spell, thus enemies must still use a Searcher spell to find the hidden player.
|Volume 3, Chapter 4||Episode 19||Fairy Dance Manga Stage.006||Recon used the spell to secretly follow Sigurd, at first for a chance to poison him for his behaviour to Leafa, but, after noticing Sigurd’s strange behaviour, he ended up following him to the sewers of Swilvane, where he saw him talking to Salamanders. While listening in on the conversation, Recon accidentally kicked a stone and revealed his presence, prompting the Salamanders to cast their Searching spell.|
- Recon once used this spell to sneak into Leafa's room, under the guise of secretly placing a birthday present for her, but after he confessed the truth, Leafa mercilessly punished him nearly to death.