Tentacle and Witches 1 - Tentacle monster fucks witch in all holes to absorb magical energy

Morino Yuuko is an ordinary teacher at first sight, who owns a mansion on a hill. But she is in fact a witch. Her secret is known by Tachibana Ichirou, one of her pupils. One day he decides to pay her a visit to see her magic. Petite witch tries to turn him into a familiar but accidentally turns him into a tentacle monster. He needs mana to survive so the busty slutty witch teacher fucks him. He regains his human form but can turn tentacle when wanted. Tentacle Tachibana secretes a pheromone which turns the witches into his permanent harem slaves.