Complex sentence: Specific details of Fujin's activities as Earthrealm's guardian have not been revealed, but information may be at hand, as after a long absence, Fujin will be returning in the upcoming'.
Split into simpler sentences: Specific details of Fujin's activities as Earthrealm's guardian have not been revealed. Information may be at hand as, after a long absence, Fujin will be returning in the upcoming'.