I don't think that V6 would be a threat but another threat is an album that was released yesterday already and has a +1 day chance over ayu's sixxxxxx...
1 18,429 Ｔｉｒａｍｉｓｕ ｌｏｖｅ YR3 15/8/4
ソンモ ｆｒｏｍ 超新星
2 4,221 ＤＲＥＡＭＳ ＣＯＭＥ ＴＲＵＥ ＴＨＥ ＢＥＳＴ！ 私のドリカム UM 15/7/7
ＤＲＥＡＭＳ ＣＯＭＥ ＴＲＵＥ
3 3,068 ＳＵＰＥＲ Ｖｅｒｙ ｂｅｓｔ AVT 15/7/29
DCT already sold 4,221 for this new week but the main competition would be that new release that was released yesterday (to probably have the 7 days on the first week advantage).
ayu gotta sell at least around 23,000 on the first day, or have slower drops than usual in order to get #1.
A ONE sold around 20,000 first day so basically no chance
It also depends on the drops of that tiramisu album.
Well if sixxxxxx can match and stay above the tiramisu album all week long it has a chance, but only then.
The tiramisu album is of a korean boy band (Supernova) member named sonmo.