The National Aeronautics and Space Administration (NASA) Science Mission Directorate (SMD) has released its annual omnibus Research Announcement (NRA), Research Opportunities in Space and Earth Sciences (ROSES) – 2025. This opportunity, ROSES25: D.3C XRISM General Observer - Type 2, is one of the many individual program elements within the ROSES-2025 solicitation. The program element provides opportunities for new joint observations with XMM-Newton and NuSTAR, allowing coordinated or simultaneous studies across observatories when scientifically justified. Additionally, time-constrained and Target-of-Opportunity (TOO) observations, up to a combined maximum of 20% of total observing time, are also allowed. • The typical period of performance for an award is three years, but some programs may allow up to five years and others specify shorter periods. • Awards will be made as grants, cooperative agreements, or contracts depending on the nature of the work proposed. • Proposers must be affiliated with an institution at nspires.nasaprs.com/ and, in general, NASA provides funding only to U.S. institutions. • Organizations outside the U.S. that propose on the basis of a policy of no-exchange-of-funds should consult the NASA Grant and Cooperative Agreement Manual (GCAM) for specific details.