I'm A Noble On The Brink Of Ruin, So I Might As Well Try Mastering Magic Ep 10 - M2F Transformation

Episode 10 Liam Tries Creating and Playing in an Ocean
To get water into Aiji without the king of Jamil knowing, Liam creates an illusionary female doppelgänger of himself, who can also use the Item Box; implants Amelia, one of his familiars, into it; and sends her to Aiji to deliver the water.