Kokuzo Bosatsu (Akashagarbha) is a bodhisattva in Japanese Buddhism whose name means "boundless space treasury," symbolizing infinite wisdom, memory, and merit as vast as the sky. Venerated especially within Shingon and other esoteric traditions, this figure is associated with the cultivation of wisdom and is invoked in rites tied to memorial and ancestral practices meant to benefit both the living and the deceased. Kokuzo Bosatsu is often depicted holding a jewel or lotus, embodying the inexhaustible treasury of compassion and insight offered to all beings.