“…Numerous studies have focused on internationalization policies at Japanese universities (Knight, 2004(Knight, , 2008Ninomiya, Knight & Watanabe, 2009;Horie, 2015;Poole, 2016), university support system for incoming foreign students (Bradford, 2015;Rakhshandehroo & Yamamoto, 2017), international students' experiences on campus (Mock et al, 2016;Rakhshandehroo, 2018) and their strategies to cope with cultural adjustment (Mock et al, 2016;Shimauchi, 2017Shimauchi, , 2018. However, the impact of third parties, such as onand off-campus volunteer organizations on international students' sociocultural adaptation, has not been sufficiently studied.…”