Ren is a diligent, truthful, direct, and reliable child. He feels a connection to dogs and harbors a peculiar fixation on rice. At present, he resides with Haru and his twin brothers, Aki and Shima. Even though they are looking after him, Ren displays a maturity beyond his years and resents being treated like a kid, particularly by Haru. He cares deeply for Haru but tends to prioritize that man's desires over his own. Possessing intelligence and perception that exceed the average for his age, he favors solitude and dislikes weighing others down with his doubts. Because of a complex upbringing and a lack of memories regarding his biological parents, he remains somewhat naive about the world, though he is slowly adjusting to his new life in Japan.
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