The party elected Lower House lawmaker Yuichiro Tamaki as co-leader last week.
Koike met Tamaki on Monday and entrusted him with appointing new leadership for the party.
On Tuesday, the governor told the party’s lawmakers in both chambers of the Diet she will resign as president and leave party affairs to the new leadership.
Koike launched Hope in September. She and former head of the opposition Democratic Party Seiji Maehara decided to effectively merge their parties.
But the decision split the Democrats over issues such as Japan’s new national security legislation.
Hope fielded 235 candidates in last month’s general election, but won only 50 seats. That’s 7 fewer than what it had before the vote.
Koike said after the election that she would stay on as president but have lawmakers run the party.
When Tamaki was elected co-leader, Koike rallied support for him.
Koike is expected to focus on running the Tokyo Metropolitan Government.
Tokyo Governor Yuriko Koike says she wants to step down as president of the opposition party Hope. (NHK)
The Japan Sumo Association says it will look into allegations that Yokozuna grand champion Harumafuji assaulted a junior wrestler. (NHKん)
A mini bus carrying mentally disabled people tumbled off a road and dropped about five meters into a wooded area Monday morning in western Japan, leaving 18 people slightly injured, police said. (Kyodo)
On Oct 31, Takahiro Shiraishi was arrested after nine bodies were discovered in his apartment in the town of Zama, Kanagawa Prefecture, where the 27-year-old had been living since August. The authorities also found a saw, which Shiraishi admits to using in dismembering the bodies after killing his victims in order to make their remains easier to dispose of. (Japan Today)
Of all the things there are to see and do in a foreign city, it’s fair to say a visit to the local garbage incinerator is not usually one of them. But a garbage facility in the Japanese city of Osaka has become a major tourist attraction — for all the wrong reasons. (cairnspost.com.au)
The Ritz-Carlton, Osaka’s French restaurant La Baie and The Ritz-Carlton Kyoto’s Japanese restaurant Tempura Mizuki have both been awarded one Michelin star in the Michelin Guide to Kyoto and Osaka 2018. (Japan Today)
Gunma Prefectural Police believe thieves suspected in a string of recent burglaries of second hand shops in the prefecture struck again twice early Friday, reports TBS News (tokyoreporter.com)
Junior high school students in Japan are generally well-behaved, though occasionally a few naughty ones may slip through the disciplinary system and wreak juvenile havoc. (rocketnews24.com)
The Fire and Disaster Management Agency plans to make the installation of hydrogen filling stations easier by revising ordinances related to the fire service law in fiscal 2018, in order to help promote the use of fuel cell vehicles, Jiji Press has learned. (the-japan-news.com)
The Kawasaki Heavy Industries C-2 is making its debut outside of Japan at the air show, as the country pushes for export sales of the military transport. (flightglobal.com)