This banquet is held to promote friendship among the participants of the workshop and to commemorates the retirement of Prof. Hitoshi Ohta, who has led the international community of electron spin science, not only in Japan, by promoting the development of high-frequency and high-field electron spin resonance systems under high pressure and by applying electron spin resonance to many spin systems under multiple extremes, revealing many novel magnetic phases. Banquet-only participants who agree with this purpose are also welcome.