0619名無しさん@英語勉強中 (ワッチョイ f9bd-JNqm)2017/11/22(水) 00:37:37.99ID:ztn91JKW0 These days, it is often the case that the Skype system doesn't operate properly. DMM should make an original system taking the place of the Skype system like that of Native Camp. This is the key to increasing the membership of DMM.