I didn't think Kamijo sounded businesslike at all, rather, extremely frustrated with business. His writing is very casual and slangy, so there are a few points I don't understand well enough to be able to do a full translation. But I was able to read a lot of things that don't come across in the nifty translation, like how overflowing with frustration he was feeling. Like this part:
"Let me be able to do a live~~~~~~~~~!!!!!"
Tonight was an event live (a multi-band concert) which Kamijo arranged. The lineup was supposed to be Metis Gretel, Dollis Mary, Izabel Varosa, and "another to be announced." I'm an Izabel fan so I would have gone anyway, but given that Kamijo had put the event together, I expected that at least he would appear to do MCs, if not perform with Mayu and Emiru as Tanbi Konoetai.
Kamijo wasn't there. Neither was the "to be announced" band. At the very beginning of the live, Kanzaki (ex-Ribbon/Marry+An+Blood, who actually did attend as an audience member sitting in the VIP section) read aloud the "please don't take pictures, use tape recorders, etc" speech which is usually done by livehouse staff. Then we heard what was probably a pre-recorded speech of Kamijo's, introducing the live.
I think last night's diary entry was a cry of frustration, that he wasn't going to be able to make it to tonight's show, when he'd been hoping to perform. ;_;