This is a collection of "World Family" [Straight-Play DVD only]. A CD that can be listened to while sleeping is also included. With this material, you can naturally improve your listening skills. You can also improve your speaking skills by imitating. My family often left it playing at home or played the DVDs during car rides. It is almost in good condition, but the case of the first disc and the booklet of the CD are in poor condition (see photos). It would be quite a burden and require a lot of storage space to get everything, but I personally think it's worth having this DVD set, which is the main material. If anyone else wants to get the other materials, I will update them from time to time, so please consider a bundle sale.