>>535640986
They're from mahou tsukai no hako "magician box" a series of drama CDs they're have a 4koma manga and appeared in carnival phantasm
The one with green hair is Katsuragi Chika, she is just an normal human and the one with orange hair is Hibino Hibiki, who is a bit of an airhead and indeed the Holy Scripture Triten created by Caubac Alcatraz as his living thesis on the love of God
In their third ascension they become Sirius (Triten) and Alcatraz is with them he's the smartphone