On October 31, 2013, at the autumn garden party of the imperial palace, Yamamoto Tarō, a member of the House of Councillors, handed the Emperor a letter. His office said that the letter set out his personal feelings.
Yamamoto admitted: Rūru o shirazu ni otegami o watashita koto wa jijitsu. It is true that I handed over a letter without knowing the rules. On November 8, the House of Councillors decided on a strict warning by its President. Reports describe the second measure differently. TV Asahi called it a ban on attending imperial events, and the news site Data Max a request to refrain from them.