Takan Shoujo -Anata e no Kimochi de Koborechau | 多汗少女 ～あなたへの気持ちで溢れちゃう～

The protagonist Taichi is a extremely common student. Long time ago with childhood friend Kaimori Isuzu though it was relations that play together, it became estranged before one is aware as the age passed.

Though every day when a usual tedious campus life is sent, a certain day it suddenly changes overnight. Because it joined hands with Isuzu in a crowded train by chance, it begins to talk as of old. To the grasped hand, her abnormal amount of sweat was attached...