Might possibly be Chigusa Hara (原千草) for anyone else wondering.
Edit:
Might actually be Sesera Harukawa (春川せせら) and the serial for the video is wrong. It should be AGEMIX-321. Chigusa's videos are still great though.
Hi, could you please reupload 真剣で私に恋しなさい!S 初回版? Most links are dead except for the ones on Rapidgator which don't allow me to download without a premium account. Thank you very much!