Tentacle Monster Reincarnation: I Will Protect the Heroines

[Notice: Smut + Plot] The evil beings who oppose the justice, entities that ensnare the girls striving for justice and peace, humiliate them, corrupt them into darkness, and turn them into their pawns as they rise to power. Senjumaru, who reincarnated into this world only to transform into a tentacle monster specialized in sexual violation, begins to move with the intent of attacking the sacred girls who fight for justice, to satisfy his own desires… “Don’t worry, Senjumaru. It’s alright now… Leave it to me.” However, he found himself utterly unable to defile the girl who smiled so gently as she said those words. His body had already become that of a loathsome monster. The only things he could use were his eight tentacles and the abilities meant for violating women. Yet even so, he extended those tentacles. Not to defile, but to save. — Description from novelcodex.org