SHIORI threw out the first pitch of the NPB.

Japan's professional baseball season started yesterday, with six games being played by 12 teams.

Among them, MCZ appeared at the Lions vs. Buffaloes game held at Seibu Dome (MetLife Dome), where SHIORI threw out the first pitch.
The ball went wide, but he threw it from the pitcher's plate and got a big cheer when he got the ball to the catcher. (Usually, female idols throw from a position in front of the plate.

This was broadcasted on the official Youtube channel of the Pacific League.