 Kọ ìparí fún ìpínrọ yìí - A bí Morozumi ní ìpínlẹ Nagano. O gboye ni kilasi 22nd ti Ile-ẹkọ Ologun Imperial Japanese ni Oṣu Karun ọdun 1905, ti o ṣiṣẹ ni akọkọ pẹlu IJA 58th Infantry Regiment, regiment tuntun ti o ti dide bi agbara ifipamọ ni awọn ipele ipari ti Ogun Russo-Japanese. Gẹgẹbi ọmọ-ogun keji, o pada si Ile-ẹkọ Ogun Ọmọ-ogun ti Ogun, nibi ti o ti ṣe amọja ni ọṣọ. Igbesoke rẹ nipasẹ awọn ipo jẹ alailẹgbẹ, ti o ṣiṣẹ ni ipo oṣiṣẹ pẹlu Oludari Gbogbogbo ti Ikẹkọ Oogun, ati ifiweranṣẹ aaye bi awọn olori ọmọ-ogun laarin IJA 59th Infantry Regiment, IJA 1st Infantry Regiment, IJA 29th Infantry Regiment ati IJA 65th Infantry Regiments ati bi olori ti Hongo Regimental District. Ẹgbẹ ọmọ ogun IJA 65th Regiment jẹ ọkan lára àwọn ẹka nínú Ogun Nanking : wọn fi ẹsùn kàn án pé ó pa àwọn ẹlẹwọn ogun lẹyìn tí ogun náà parí. 