■Prime Round schedule and competition format

- Match Schedule
Semi-finals:   1st Leg   Wednesday, October 9   /   2nd Leg   Sunday, October 13
Final:       Saturday, November 2

- Competition Format
Total of eight teams comprising five winning teams from the Play-off Round and the three teams (Kawasaki Frontale, Yokohama F・Marinos and Ventforet Kofu) participated in ACL 2023/24 knockout stage play in a home and away tournament (There is only one match for the final).
Fixtures of the Prime Round shall be determined following the draws after the Play-off Round.

- Quarterfinals, Semi-finals (home and away) 
In case a 90-minute match (two halves of 45 minutes each) is played and no winner is decided, the match ends in a tie.
The winner in each round is the team with the highest number of wins for two matches.
If the number of wins is the same, the ranking is determined based on the following, in order of priority.  

① Goal difference for two matches
② 30-minute extra time (two halves of 15 minutes each) at the end of the 2nd leg
③ Penalty shoot-out
(Five players from each team. If the winner is not decided, the sixth and subsequent players will take turns to kick until the winner is decided.)

- Final (One match) 
In case a 90-minute match (two halves of 45 minutes each) is played and no winner is decided, an extra 30 minutes (two halves of 15 minutes each) is played. If the winner is still not decided, the winner is decided by a penalty shoot-out. (Five players from each team. If the winner is not decided, the sixth and subsequent players will take turns to kick until the winner is decided.)