Cross Game, Fuuka Recommendations
Both series have a plot/goal that focuses on a dream of a deceased character.
Both follow the same principal of following up on a deceased love interest's dreams. Hell, the deceased LI and MC in both manga were born on the same day. But Fuuka is more dramatic and is about music while Cross Game is more of a simple RomCom and about baseball. But in my mind, both are masterpieces that should not be overlooked.