Seemingly shy and distant at first, Mika eventually warms up to the people he knows. To those unfamiliar to him, especially those with high rankings, Mika prefers to observe them and understand their personalities before properly interacting with them as a sign of respect. Despite his young age, Mika is mature and responsible, taking care of his older brother when he comes home drunk and completes his tasks without complaining or having much issue with them. He enjoys cartography.