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 all research done on the Gemstones. Described as an old man who looks at the Gemstones as more than just research material but is 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 that they have their own lives to live and that 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.