Manny's known for helping charity so that's really going to be one of his goal when it's up to these profits that he'll make from these matches.
The exhibition match between Manny Pacquiao and South Korean YouTuber and martial artist DK Yoo will be organized as a pure entertainment match as what an exhibition match should look like. The match doesn't have a specific charity project that will support it, instead, both participants have their own plan for their earnings and proceeds.
Instead, and as you mentioned, some of Pacquiao's earnings here will be used to support his own project, Pacman Project. While on other hand, Yoo will give assistance to relieve operations in Ukraine. How will be the exact share of the cake was not disclosed.