Third season of Motto! Majime ni Fumajime Kaiketsu Zorori.

Sequel to Motto! Majime ni Fumajime Kaiketsu Zorori

By a twist of fate, a herbivorous dinosaur finds a lost egg and brings it back to her nest. When the egg hatches, however, a carnivorous dinosaur emerges. Unable to abandon the child, she names him Heart and raises him in exile alongside her own child. As Heart comes of age, he struggles to eat the same food as his family and runs away in disgrace when he learns that he cannot live properly without meat. Years later, the now feared predator Heart encounters a situation similar to his past—he spots a dinosaur egg opposite his kind. As it emerges, Heart remarks that the newborn is delicious-looking. The newborn herbivore thinks that Heart is his father and takes delicious-looking, or Umasou, as his name. Unable to eat a newborn who loves him, Heart reluctantly decides to raise Umasou as his own. As he nurtures a forbidden child like his mother before him, Heart struggles to deal with an unforgiving world and the true natures of predator and prey.

Tricked into assassinating his own prospective father-in-law, righteous samurai Raizou Kurima is overwhelmed with guilt. In order to reclaim his honor, Raizou swears vengeance on the lord who gave him those misleading orders. In his pursuit, he is aided by self-proclaimed merchant-of-all-trades Yuuen Usui, who is actually one of the Revengers—assassins who seek justice for the wronged and dispense bloody revenge on their behalf. Tragedy seems destined to follow Raizou as he becomes increasingly intertwined with members of the Revengers. As he begins working as a vigilante alongside them, the complicated web between the corrupt Japanese political elite, the unscrupulous Europeans, and the Revengers gradually reveals itself. The more entangled he becomes in these affairs, the more Raizou realizes that justice is as deceptive as the honor that he sought to redeem.