Sakamoto Days manga volume 9 features story and art by Yuto Suzuki.

Sakamoto comes running to Shin's aid and clashes violently with Shinaya, who's being controlled by Gaku! Our heroes are striving to get information on X, who continues to operate in the shadows, but nothing has gone as planned during the JCC transfer test. How will it all end?!

Sakamoto Days manga volume 10 features story and art by Yuto Suzuki.

As Sakamoto and his friends hunt for the database at the JCC, Shin winds up in a serious duel with a teacher who might have information on what they want. Meanwhile, Sakamoto deals with Amane, a boy with a connection to X. Thanks to X's schemes, the JCC faces an unprecedented crisis!

Sakamoto Days manga volume 11 features story and art by Yuto Suzuki.

When X’s forces attack the JCC, all hell breaks loose! While Satoda Sensei faces off with Kanaguri to protect the students, Sakamoto and Shin rush to secure Amane’s grandfather. But the whole situation gets even more hairy when Club Jam hypnotizes the entire school!

Sakamoto Days manga volume 12 features story and art by Yuto Suzuki.

It's an assassin showdown! Shishiba and Osaragi take on Yotsumura and his geisha on the streets of Kyoto. What happened between Shishiba and Yotsumura in the past to sour their strong mentor-disciple relationship? Meanwhile, chaos engulfs the JCC as the battle between Sakamoto and Kanaguri comes to a head!

Sakamoto Days manga volume 13 features story and art by Yuto Suzuki.

In order to avoid expulsion from the JCC, a young Sakamoto, Nagumo, and Akao are assigned a special mission - along with another outcast, Uzuki. The assassins close in on their target at a special department store for hit men, but unbeknownst to them, their actions there will alter the course of their futures forever…