[Maka Fushigi] Hina's Labyrinth Ch. 1-2

Takumi never meant to lay hands on his little sister Hinako while she slept, but once she stirs awake curious, flushed, and begging to see more, guilt curdles into a secret neither of them can put down. Haunted by what they've done, he wanders the neon-lit streets until a call girl flyer promising full-body service pulls him toward Miyako, a curvy young woman with heavy breasts who services him and coolly promises to call for him again. But her parting jab about him having a girlfriend hints the real labyrinth is only beginning.