Complex sentence: Doraemon's 37th film made highest second weekend gross and highest total after second weekend in the franchise and is the fastest Doraemon's film to reach ¥4 billion milestone within 37 days of release.
Split into simpler sentences: Doraemon's 37th film made highest second weekend gross and highest total after second weekend in this franchise. This is the fastest film of Doraemon to reach ¥4 billion milestone within 37 days of release.