[Kamen Rider] Brothers and Sisters in Kiva

Matsuno Seiya, a child unknown and unblessed by his father, suddenly one day, he was taken away by a young man who suddenly appeared. The man told him that he was his elder brother and took him to live in the biggest house and eat the most luxurious meals. But my brother doesn't come home often, and he tells him to take the stone necklace with him and hide the little bat when he goes out. He doesn't understand but is obedient. Until he went out on a whim and encountered a monster. As soon as he took out his belt, he saw a young man opposite him holding a small bat of the same style. "Who are you/who are you?" "Big brother!/Little brother!" Regardless of the two people, one golden and one white little bat hugged each other, leaving tears of emotion. Sheng Ye and Hong Du on the side simultaneously tilted their heads in confusion. Tai Ya, who had arrived late, was shocked and stepped back. Two or two younger brothers? …Wait, isn't that double happiness! ? Purpose: To protect the best mother