Juubi No Shinju Novels & Stories

“What’s his name?” Jiro and I exchanged a look, and he nodded for me to share the name we’d chosen together. “His name is Ren,” I said, my voice steady despite the overwhelming emotion. “It means ‘lotus’—a symbol of rebirth and strength.” Mina beamed, carefully adjusting the blanket around Ren. “Hi, Ren,” she whispered. “I’m your big sister, and I’m going to love you forever.” Hibiki placed a hand on Ren’s tiny head, his expression serious. “I’m your big brother. I’ll protect you, no matter what.”

if I can recall his name is Seisaju he's one of the forth Strongest Kiyosaku. Seisaju : Well Shinjuku we're here. Shinjuku : Yessss Now let the games begin. S1 E10 "Life or Death"

"Stupid! Of course I only found out how after the ZhijuMoya power was in my body. ZhijuMoya is a Yokomoya that grants multiple powers to one's instincts, making them an all-knowing human. By the time I found out that way, it was too late.”