Only the girls' bathrooms have locks. Kyoko points out that the killer had to dismantle the doorknob with a toolkit to reach Sayaka, something Makoto wouldn't have needed to do in his own room.
The tide turns against , the Ultimate Baseball Star, through several critical pieces of evidence:
Monokuma carries out the first "Punishment," titled Leon is strapped to a pole and pelted by a high-speed pitching machine firing thousands of baseballs until he is killed. Aftermath and Epilogue