The Research Big Shot Transmigrates into a Pitiful Little One [Quick Transmigration]

'''[Unrestricted Chapter Comments Open~Pre-orders Welcome~] Synopsis: Renowned scientist Chu Cheng is entrusted by the military to descend into lower-tier worlds to save Marshal Tang Lin, whose soul has scattered due to the war against the insectoid race. It’s said that due to his fragmented soul, Tang Lin in each world suffers from severe afflictions—Chu Cheng must heal him before retrieving the soul fragments? World One: The marshal is a CEO suffering from ALS, abandoned by all. His playboy father covets his inheritance, while his parasitic mother drugs him to force him to leave an heir. Chu Cheng accidentally spends a passionate night with him, leading to a contractual marria...