AFAIK Reso'cha is a special service theme that covers all JAL and JALways tour packages to Hawaii, Guam, and Saipan. There are also Okinawa services.
Reso'cha was first started on June 4th, 1994, flying to HNL. There used to be Paris and Australia routes.
JALways exists as a separate entity from JAL. Aside from scheduled flights (began in 1999), they operate charter and "wet lease" flights (e.g. JAL flights operated with JALways crew and aircraft). scheduled flights are mostly to Hawaii, Saipan, etc.; charter operates to Australia, South Asia, among other places.
(no english on either site)