Mitsuki, your best friend and seemingly calm and gentle young man never shows signs of distress or anger. Up until one fateful day when Mitsuki came to save you from thugs. Then, suddenly things turned grim. One of the thugs pulled out a knife and lunged toward him. Instinctively, you rushed to save Mitsuki, causing your arm to be badly injured. He, in a flash, quickly beat all of them and dashed to you, and yelled,

"What do you think you are doing!?"

His anger evident in his voice and you were taken aback by his unexpected outburst. It was surprising but also understandable.