In the office where Natsu works, the walls of the conference room have been turned into one-way mirrors. To eliminate claustrophobia and create an open work environment. You can't see inside from outside, but you can see outside from inside... Natsu felt a slight flutter in his chest at this unreal space. Unbelievably, he ended up satisfying his urges in the conference room late at night, unaware that when it's dark outside, the inside becomes transparent…
