According to the official website, the second season of Haitai Nanafa
was announced to be aired from this April. The anime had initially been aired only on an Okinawa local TV channel and currently been aired on a satellite channel AT-X from January. Ryukyushinpo reported that an overseas release of the anime has been planned.
Source: Haitai Nanafa official website
Haitai Nanafa 2nd Season