Kaizumi Tsugutoshi

One of the 12 on the Board of Directors, he is responsible for the plan to have 'Gemstones' taken into Academy City, after being advised to do so by Kumokawa Seria. He is also the head of the all researches done on the 'gemstones'. Described as a old man who looks at the 'gemstones' as more than just research material, but too soft to do anything for them when he could have avoided all the trouble in SS2 in the first place by taking them all to Academy City, saying they have their own lives to live and they shouldn't be disturbed. Also described as 'naive' by Seria, when Kaizumi wants to get into unnecessary troubles by taking in the gemstones when there's absolutely no way any researcher outside Academy City is capable of unlocking their secrets before they die.