What historical event is described in the text, and who was involved?

Historical Event:

The text describes the Mongol invasion of Japan in the second half of the 13th century.

Key Figures and Involvement:

• Mongols: Invaded Japan on the orders of Khan Kublai.
• Samurai: Their position in society often led to conflicts and feuds, even threatening the emperor's power.
• Minamoto Yoritomo: After a long war between clans in 1192, he seized power and proclaimed himself Shogun, a great commander. The emperor remained, but all power was in Minamoto's hands.

The large Mongol army reached [text is obscured].