Sakamoto Days manga volume 18 features story and art by Yuto Suzuki.

The fight between Gaku and Nagumo ends with Nagumo delivering a knockout blow. Down in the museum’s basement, X confronts the JAA’s chairman while X’s gang takes on Shishiba and Shin on the upper floor! As these battles reach their climaxes, Sakamoto rushes to X - but can he make it there in time?