This is the 5th PHENIX/sPHENIX/EIC collaboration workshop between Japanese and Korean institutes. The first one was held in Ewha Woman's University in Seoul, South Korea (2012), the 2nd one was held in SungKyunKwan University, Sung-Kyun-Kwan, Suwon, South Korea (2013), and 3rd one in RIKEN, Japan, the 4th one was held in Hanyang University, Seoul, South Korea (2015). Past workshops provided a good synergy effect in our contribution. Since PHENIX was decommissioned in 2016, the scope of this collaboration workshop is expanded to the upgrade project sPHENIX and even further future EIC project. Taking geographical advantage, it is logical to collaborate within Eastern Asian countries to maximize the outcome within limited resources. This meeting should be an opportunity to discuss how to proceed and optimize the collaboration. The program of the meeting categorized into 3 major topics 1) Introduction of forign student support program (IPA) in RIKEN, 2) presentation by IPA(or ex-IPA) and junior graduate students, 3) Projects of PHENIX/sPHENIX/EIC, 4) Research activities of collaborators outside RHIC.