Kai Miyanaga

Kai Miyanaga (宮永 界 Miyanaga Kai) is the husband of Ai Arctander and the father of Teru Miyanaga and Saki Miyanaga.

Appearance
Kai has short brown hair that has bangs hanging on either side, brown eyes with oval-shaped glasses and a slight beard.

Introduction Arc
Kai lives in Nagano Prefecture with Saki Miyanaga while Ai Arctander lives in Tokyo with Teru Miyanaga. Although the two live separately, they are not divorced and he continues to pay attention to Teru's mahjong by reading reports on her matches in Weekly Mahjong Today.

National Tournament Arc
Kai is shown watching the matches in his house.

Etymology

 * The name Kai means "world" (界).
 * Kai's surname Miyanaga means "temple, shrine, palace" (宮) (miya) and "eternal" (永) (naga).