I found this page with a short list of 通信{つうしん} from the publisher Tosuisha for its magazine Ichiraci, and I was wondering what exactly 通信 are. Here's an example cover of one:
There are several people listed as working on different sections in each book, the sections being
- 表紙 (cover page)
- 描下し2Pまんが (2-page manga)
- キャラインタビュー (character interview)
- 燃えよ☆萌魂 (moeyo ☆ moetama)
- キャラ日記 (character's diary)
- すぺしゃる4コマ (special 4-koma)
The page also mentions exchanging Ichiraci back issues for points of some kind. (配布終了後のバックナンバーは、11号~18号まで各 2ポイント で交換出来ます♪)
Does anyone know what exactly these are? I would assume they're some sort of mini-booklet distributed every month or so with special features of some sort for currently-running manga, but I'm hoping that someone else knows more.