V4641 Sgr Kiyota-san's observation on May 25 Dear Colleagues, We have received a new set of BVIc data from Kiyota-san (May 25). The data show very erratic, violent fluctuations (the systems seems to vary violently when the system is moderately faint). The color becomes bluer than on May 24. Correlating study between Ouda B-band and Kyoto observations is being undertaken by Uemura-san. Regards, Taichi Kato VSNET Collaboration team