Games
There will be 24 games played in total for the semifinals, with each team playing in 16 of those games.
Scores
Each team carries over half of their score from the regular season (rounded up to the nearest tenth)
| Rank | Team | Regular Season Score | Semifinals Starting Score |
| 1 | U-Next Pirates | +377.1 | +188.6 |
| 2 | Shibuya Abemas | +328.2 | +164.1 |
| 3 | Konami Mahjong Fight Club | +249.0 | +124.5 |
| 4 | EX Furinkazan | +184.4 | +92.2 |
| 5 | Sega Sammy Phoenix | +184.2 | +92.1 |
| 6 | Kadokawa Sakura Knights | +177.0 | +88.5 |
Schedule
Games will take place every Monday, Tuesday, Thursday and Friday from March 21 to April 8. All games will start at 19:00 JST.
- Week 1: March 21, March 22, March 24, March 25

- Week 2: March 28, March 29, March 31, April 1

- Week 3: April 4, April 5, April 7, April 8

Qualification for the Finals
The top 4 teams with the highest score after the semifinals will move on to the 12-game finals, where they will compete to win the 50 million yen grand prize and the M-League championship plate.