4
S1, E4: The Naito-Shinjuku family is divided into two groups: the group led by Reiji, who proposes Taiga as the next president, and the group led by Akira Shiba, who is trying to rewrite history by putting Kanemaru on the spot.

S1, E4: The Naito-Shinjuku family is divided into two groups: the group led by Reiji, who proposes Taiga as the next president, and the group led by Akira Shiba, who is trying to rewrite history by putting Kanemaru on the spot.