Mao, the magical girl of devildom -Horny Tentacles-

The rebellion was carried out by some of the enemy devils……. The devils led by Revi abducted the princess
of royal family ruling the devildom. His young sister Mao realized his disappearance earlier than anyone else, and rushes to rescue
her older brother. But now, she gets tied up with tentacle monsters summoned by Revi and forced to f*ck in front of her brother…..