Güyük (or Kuyuk; Mongolian Cyrillic: Гүюг хаан) (c. March 19 1206–April 20 1248) was the third Great Khan of the Mongol Empire, the eldest son of Ögedei Khan and a grandson of Genghis Khan. He reigned from 1246 to 1248.
Güyük received military training and served as an officer under Genghis Khan and Ögedei Khan. He married Oghul Qaimish of the Merkit clan. In 1233, Güyük, along with his maternal cousin Alchidai and the Mongol general Tangghud, conquered the short-lived Dongxia Kingdom of Puxian Wannu, who was a rebellious Jin official, in a few months. After the death of Tolui, Ögedei proposed that Sorghaghtani, the widow of Tolui, marry his son Güyük. Sorghaghtani declined, saying that her prime responsibility was to her own sons.
Güyük participated in the invasion of Russia and Central Europe in 1236–1241 with other Mongol princes, including his cousin Batu and half-brother Kadan. He led his corps in the Siege of Ryazan and the lengthy siege of the Ossetian capital Maghas. During the course of the conquest, Güyük quarreled violently with Batu at the victory banquet and screamed at him, "Batu is just an old woman with a quiver". Güyük and Büri, a grandson of Chagatai, stormed out of the banquet and rode away swearing and cursing. When word reached the Great Khan, they were recalled for a time to Mongolia. Ögedei refused to see them and threatened to have his son Güyük executed. Ögedei calmed down and finally admitted Güyük into his ger. Ögedei criticized Güyük, "Do you think that the Russians surrendered because how mean you were to your own men. ...Because you captured one or two warriors, you think that you won the war. But you didn't capture even a single kid goat." Ögedei reprimanded his son harshly for fighting within the family and for mistreating his soldiers. Güyük was dispatched again to Europe.
"Kioku" is Japanese for "Memory"
Kitto saigo wa koko ni kaette kuru to omou
Sekai no hajimari wa futari de miteita
Ichido dake sono basho ni tashika ni todoita kara
Kono te wo hanashitemo kowaku wa nai no nido to
Karappo no karada ni furisu motte yuku kioku
Watashi wa sukoshi-zutsu tsukutte mitashite
Sonna fuu ni hito wa hito no katachi ni naru no
Wasuretakunai omoi kokoro ni kasanete
Doko made tooku yuku toki ni mo
Watashi wa koko ni kimi no naka ni
Kimi wo michibiku hoshi no you ni
Zutto iru wa
Kimi wo hanarete yuku toki ni mo
Mune ni kizanda ano basho e to
Watashi wa kitto kaereru kara
Furimukazu ni yuku wa
Karappo datta mune ni ai to iu yuu no kioku
Kimi ga amaku nigaku sosoi de kureta
Ichido dake kimi no naka tashika ni todoita kara
Kono te wo nobasu koto kowaku wa nai no nido to
Tatoe ima mitsu kara naku temo
Taisetsuna mono wa mada aru no
Kimi wo tada dakishimeta yoru ni
Tadoritsuita
Kimi wo hanarete yuku toki ni mo
Watashi wa koko ni kimi no naka ni
Kimi wo michibiku hoshi no you ni