Takuya Ishida

When 17-year-old Makoto Konno gains the ability to 'leap' backwards through time, she immediately sets about improving her grades and preventing personal mishaps. However, she soon realises that changing the past isn't as simple as it seems, and eventually, will have to rely on her new powers to shape the future of herself and her friends.

In an alternate Japan, territorial street gangs form opposing factions collectively known as the Tokyo Tribes. Merra, leader of the Wu-Ronz tribe of Bukuro, joins forces with heavy-hitting gangster Buppa of Buppa Town. With Buppa's support, Merra aims to initiate a gang war between the Wu-Ronz and the Musashino Saru, and in a confrontation between the two attempts to kill Kai of the Musashino Saru. The inadvertent murder of Kai's friend Tera (a Musashino Saru member beloved by all Tribes since before their formation) leads to the joining of forces between all of the Tribes in an all-out war against Merra and Buppa.