Day 16[edit]
From where you start, go to the Football HQ. There, you'll see Monta and Hiruma. Hiruma tells Monta that he can join the Deimon Devil Bats. Monta becomes the team receiver and that's about all that happens today.
Day 17[edit]
Walk into school and you'll see Monta, proudly dressed in his new Devil Bats football uniform. After talking, go to the HQ and the Devil Bats will have a meeting. Monta will officially become the team's main receiver.
Day 18[edit]
Once again, talk to Monta and then go to the HQ. This is when Eyeshield's identity is revealed to Monta - Monta finds out that Sena is really Eyeshield 21. After this discovery, you'll have a practice football game. Win the football game and there will be a discussion followed by Hiruma's pet dog, Cerberus, making another appearance. He doesn't look too happy now either, and will begin to chase Sena and Monta, thus ending the day.
Day 19[edit]
All you'll have to do here is talk to Monta and play a mini-game. After you play the mini-game, go back to where you first found Monta (where he played baseball) and pass the ball to Monta.
Day 20[edit]
Go to the Deimon Devil Bats HQ and talk to Hiruma. He'll pass you the ball. You can either catch it or miss it. The outcome doesn't matter, but Hiruma will be angry with you if you miss it. After this, the day will end.