Debuting at the 4th place also marks their best debut rank since their third single Onaji Jikyuu de Hataraku Tomodachi no Bijin Mama -and because of the estimated sales it seems safe to say this will become their best selling single to date.
The news have been a rush all day at 2ch because it could be first time for a H!P group to surpass its top group Morning Musume. Estimated sales are calculated at 2ch with little to none margin of error merging Oricon's public and private leaked data.
S/mileage is the only H!P group set to perform at the infamous FNS Uta no Matsuri 2011 this month along AKB48 and other top-notch idols. "Uchouten LOVE" is S/mileage's 6th and last 4-nin single. Their 7th single (9/28) will include 2nd generation members.
Source | S/mileage official site
If this single is to become part of HISTORY then we all should buy it *gets!*