from the Moko Shurai Ekotoba
Mongol warriors depicted on a Japanese emakimono. The Moko Shurai Ekotoba was created by Takezaki Suenaga to press his claims for reward after the war against the Mongols.
See a Mongol infantryman from Armies and Enemies of the Crusades 1096-1291 by Ian Heath, based on the Moko Shurai Ekotoba
Source: A site with the 13th century original and later versions.
Sections 6, 7 & 8 of the 'Guided View' tab shows that the 3 Mongol soldiers on the right & the bursting shell were later additions to the 13th century scroll.
Referenced on p14, The Mongols (Men-At-Arms Series, 105) by Stephen Turnbull
Dismounted Mongol warriors (probably Chinese or Korean auxiliaries) firing on the retreat. From the Mongol Invasion Scroll.
See also 13th century Illustrations of Costume & Soldiers