Return Case or OhioLINK items to any Case library, yes. Case libraries have different hours, so your book might not get checked in on the day you return it if you use a bookdrop.
Return the CPL@Case-KSL books only to KSL, so the collection is here for you & others. Case libraries are not responsible for returning other local libraries’ books. Returning public library books here will not check them off of your account at those libraries.