Jiden Itagaki Keisuke Jieitai Hiroku: Waga Seishun no Narashino Dai-ichi Kuuteidan

This manga is based on the author's personal experiences serving in the JGSDF 1st Airborne Brigade, portraying the difficult conditions he endured during his youth. It challenges the typical perception of the Self-Defense Forces by highlighting the intense nature of this elite unit. The stories included focus on physical challenges such as walking 200,000 steps over two nights and three days, drinking over 600cc in 70 minutes, running 340 meters in 60 seconds, and maintaining a pace of at least 900 meters per minute for 210 days.