S1 NO.1 STYLE

S1 (Esowan) is a Japanese adult video producer. Its full name is S1 NO.1 STYLE. Established on November 11, 2004 as an in-house label of WILL Inc. S1 handles solo works only, specializing in slender, beautiful, and large-breasted actresses, including model-type and gyaru-type. Its slogans are "Japan's No.1 beautiful-girl maker" and "Japan's No.1 super-solo maker," and among WILL-affiliated labels it is the only one that releases works starring exclusive (contract) actresses.