Itekani missed an oppertunity to see Mako-chan and hates himself for never calling to say he was sorry. By chance he runs into her 6 months later, and the situation is akward. Itekani does not have time to talk at the chance, but both want to talk, so they arrange a 2. meeting. Itekani goes to the meeting place early, but an old man was left behind from an tourist bus, and asks Itekani to catch the bus for him. Itekani being a nice guy, cant say no. 新作“Extra Stage2～旅立ちのグリーン～”的主要角色为池谷浩一郎和佐藤真子。半年前，池谷和其心仪的真子有个约会，可池谷却因迟到而没有见到真子，有着如此悲痛过去的池谷没有机会道歉，而半年时间就这样过去……故事发生在藤原拓海所属车队ProjectD与东堂塾在盐谷比赛的时候，池谷在关越自动车道的服务区偶然和碓冰峠最强组合“真子&沙雪”再会。因半年前的迟到而耿耿于怀的池谷这次终于下定决心要和真子道歉，可真子却先说有话要和池谷说，于是两人再次约定相见。当日，池谷为了不再重滔复撤而提前2个小时达到约定的地方，这时池谷遇上了一名迷路的老人。出于良心他送老人到了北轻井泽，而倒霉的池谷的车行至旧碓井峠的时候却发生爆胎事故。那么最终池谷能否和真子见面呢？……
