Lake Kizaki (???é??, Kizaki-ko?) is a lake, situated near Omachi, Nagano Prefecture, Honsh¨±, Japan, and located at the foot of the northern Japanese Alps mountain range. Mesotrophic and subalpine in nature, numerous lakeside attractions surround the lake, with the locale being a popular Japanese lakeside resort. Kizaki is also part of the Nishina Three Lakes, which include Lake Aoki and Lake Nakatsuna.
Lake Kizaki was also the setting for the anime series, Onegai Teacher (also known as Please Teacher!), and its sequel, Onegai Twins (also known as Please Twins!), with the lake and ......