6

Wish Upon the Pleiades (放課後のプレアデス)

Character designs for Subaru, Aoi, Nanako, Hikaru, Itsuki, and even Minato were included in Febri Vol. 29 (Amazon US | JP). Mai Otsuka (大塚舞) is the anime character designer, but Tengen Toppa Gurren Lagann concept artist Daisuke Kikuchi (菊地大輔) came up with the original designs.