Obu Kai

The are modified Obu units and next-in-line Spiricle Armor prior to the Sakura Wars series.

Background
With the first Obu a remarkable success, Kanzaki Heavy Industries soon began mass-production of the armor with improved modifications. Only 3 units were produced to which Sumire named them the Sanshiki Sumire (三色スミレ) in white, yellow and violet respectively.

In Sakura Wars: Taisho Roman Gakuentan, the units were continued in its production line and commissioned for the students at the Grand imperial Academy to utilize. In comparison with the new Koubu units, their performance statistics remain largely inferior as they were constructed for data gathering