Kashō (late Heian period)
9 August 1107 (Kajō 2, 19th day of the 7th month) : In the 21st year of Emperor Horikawa's reign, he died at the age of 29. The succession (senso) was received by his only son.  Soon after, Emperor Toba accepted the monarch's role and duties and powers (sokui).  This was confirmed in ceremonies.