These are originally Japanese DVD/VHS. All of them are in Japanese dialog without any subtitle. Purchasers should be sure that their DVD players can play DVD region 2 (Japan zone) since most US DVD players can play only DVD region 1. Moreover, Japanese DVD are all in high quality with very high prices, somehow twice high prices than other DVD types. However, they contain some special bonus stuffs like character guide books or postcards that you can't obtain anywhere unless you buy this DVD type.

There are many unofficial DVD boxsets released by many suppliers. This is the first version with various types of DVD. This unofficial DVD isn't created in Japan, so it may not be in high quality, and there is no speciall stuff coming with it at all. Moreover, all of them are in Japanese dialog with Chinese/English subtitles although the translation probably isn't exactly correct. However, its prices are very cheap, and it is released very fast. In order not to be confused when you buy, you should focus on the episode numbers only.