In the United States the National Suicide Prevention Lifeline can be reached at 1-800-273-8255 or over chat at https://suicidepreventionlifeline.org/
In Japan, the Health Ministry website has contacts for people to find support by phone or online. https://www.mhlw.go.jp/mamorouyokokoro/
In South Korea, the Korea Suicide Prevention Center operates a 24-hour hotline at 1393. http://www.suicideprevention.or.kr/main/index.html