He went on to play three matches for the All Blacks, against France, Argentina and Japan, and joins fellow Highlanders forward Liam Squire in continuing his career in Japan following the 2019 season, with Squire signing a two-year deal with the NTT Docomo Red Hurricanes.
The Dynaboars, who won promotion into Japan's top competition last season, have also signed Sunwolves midfielder Michael Little for next season.
The former North Harbour second five-eighth has impressed in leading a revived Sunwolves squad around the park early in the 2019 Super Rugby campaign. He played a key role in the side's win over the Chiefs in Hamilton last weekend, which was the franchise's first ever away win.