Night office…. I fought with a PC. The library where nobody could be in the company made a sound with "katakata". Think whether it is imagination, and be opposite to a PC again. Then this time "kata"…Ann…Like that An…Heard a to In sound. Feel that this is not an ordinary case, and go to the library fearfully…. One hour later, fell down like a boxer after my baring a lower part of the body, and having finished a game….