can help offline bullying victims. • When the risk of offline bullying increases, e.g., after mitigating behavioral restrictions and after long vacations, online social support becomes essential for victims' mental health. → Online social support can complement insufficient offline social resources because players can express their emotions via their avatars • Such support can be reinforced by facilitating online social relationships. n Suggestion • Online avatar communication may be suitable for helping victims. • The mental care of bullying victims and bullying prevention are more important immediately after mitigating behavioral restrictions and long vacations than during ordinary times. n For application providers • Promoting online social support is also beneficial for application providers. • This can increase user satisfaction and happiness because providing social support improves the mental health of recipients and sources. • This may produce a comfortable society for users in the virtual world, which also allows application providers to acquire more users. 10