1x3 - Grisaia: Phantom Trigger

Sniper Talker of Mihama Gakuen, a special skill training school, heads to a remote island in the Philippines for an overseas joint training camp with St. Yale Foreign School with members of the privately-owned work intelligence training organization SORD. However, he was involved in the "trouble" of a top secret operation aimed at destroying the weapon moonshine organization, and decided to participate in the operation to chase the escaper Gumi of St. Yale. During his mission, Toka meets his memories with his parents and his unfulfilled promises with his old friend, Shiho, and thinks about Gummy's circumstances. What is the answer that Talker came up with while each speculation intersected?