Armando is an elderly man with a deep connection to a specific Fagus Sieboldii tree, which holds immense personal significance for him. Learning of plans to cut down the tree causes him distress, prompting him to take action against its destruction. He actively disrupts logging efforts despite understanding his solitary resistance stands little chance against the larger operation. His determination arises from an inability to abandon the tree, rooted in its profound role within his personal history or experiences. Armando appears exclusively in episode 8 of the Black Jack OVA series.