Reader-added tags include "Multipurpose manga artist", "Tatara Works, Ltd." and "Arousing one's motivation".

Wonder if this involves tinkering with Arduino again, which he had done not so long ago already.

Kogasa said:

Basically, the reason I'm making a ventilation fan myself is because it sounds like fun. :-)

Yup, guessed it, then again, it does sounds fun building things yourself.