Tsuyoshi, sometimes a carpenter.
As you know, Tsuyoshi is one of front staff.
But he works as a carpenter and a repairman as well.
He fixes computers which our guests use at the rounge.
He repairs ladders which our guest broke accidentally.
Now, he is making a shelf for our office
using parts of ladders which our guest broke accidentally.
And he made a shelf for our kitchen!
If you hear the sounds of tunk or whirring sound,
it means he is repairing or making something for both our guests and us.
Thank you oni-chan!