Kaiju Kamui Vol. 1 by Shintaro Arima

Japan has been devastated by attacks from giant monsters! Tanks, bombs, missiles, airpower - all are useless against the overwhelming threat. In a desperate gambit, ace pilot Yamato Shidou is placed onboard a giant biological weapon, codename: Kamui. The only thing that can beat a kaiju... is another kaiju!
Binding: Paperback / softback