Request [Help] How to extract CG Images / Audio files from .MPK and .CPK?

[taki :::]

I tried about 20 Apps. 7 Apps from Youtube had some strange virus, other 13 had bugs or something or just I could not open them.

Is there any simple app (without install) which can open or extract .MPK and .CPK?

Thank you so much! (some games with those files: steins;gate all 3 parts, date-a-live: rio reincarnatio)