丸綿さん

The protagonist, yet a very enigmatic person.
He is kind-hearted and mild-mannered, and is polite and serious to everyone.
He is honest, easily empathizes with others, and is quite prone to tears.
In general, he is always low-spirited and says very little.

Although he may seem gloomy and gentle thus far, he is in fact a former secret service agent and a very skilled assassin.