The House of Councilors re-elected Yutaka Inoue as its president and Shoji Motooka as vice president Tuesday during the first Diet session since last month's nationwide election.
Motooka, a Democratic Party of Japan member, replaced the retiring Hisamitsu Sugano. In line with customary procedure, Motooka left the DPJ later in the day.
The extraordinary session is to run for four days.