Emma Sano/Synopsis

History
Emma is the youngest of the Sano siblings, and the younger sister to Izana Kurokawa who she lived with until she was 3, when he left for 'school' and she hasn't seen him since. As a child she moved in with her grandfather and two brothers. Shinichiro and Mikey welcomed her Mikey taking the name Mikey so she didn't feel weird with a foreign name. Her siblings took care of her and taught her how to fight; leading her to make many friends along the way.

Emma and her brother Mikey are very close being born just over a year apart, that non-suspecting people think they're dating. Emma is also close to Draken who is her crush; and gets excited when he buys her a birthday gift. She tries to grow up faster than she is and uses her body to get her way and try to make her crush jealous. She has a distaste for fighting between her brother and Ken and is loyal to them and Toman. She is protective of Hina and follows the orders to protect her.

Ordered by Izana, Emma gets attacked by Kisaki and killed. Mikey in his desperate attempt to save his sister carries her to the hospital on his back when she utters her final request for him to tell Draken that she loves him and for Takemichi to take care of Mikey. Before allowing herself to die on the back of her brother.

Plot
Emma is with Takemichi Hanagaki at a karaoke. She undress and gets on him, but then the future Takemichi takes over and he is surprised to be in this situation. The room phone rings and Emma answers, wanting another 30 mins, but Takemichi uses that moment to run.

Later, she goes to Toman's meeting at Musashi Shrine. Ken Ryuguji tells her to protect Hinata Tachibana as she is Takemichi's girlfriend. Emma then greets Takemichi and calls him wussy boy, causing Hinata to wonder what he means and Ken to wonder if he knows Emma. Takemichi states he has no memory, but Emma explains he made her undress in her underwear and then ran away. That angers Hinata, who then beats Takemichi. Emma is surprised that Takemichi went with her, considering he had a girlfriend. She explains she isn't into Takemichi, but just wanted to grow up faster. She hoped that Ken will get at least a bit angry and not only care about Manjiro Sano, bikes and fighting.

When the Toman conflict with Moebius began, Emma got a call from Ken and asked her to come to the hospital and look after Takemichi. When Takemichi woke up, he accidentally touched her beasts and Emma called him a perv. Emma explains that she doesn't really know what is going on, but Manjiro and Ken are fighting due to Pah-chin and currently Toman is split into two factions. While she cries over Takemichi's lap, Hinata comes and mistakes the situation and beats Takemichi.

During a trip to the cemetery with Mikey and Takemichi, Emma is hit in a drive-by biker attack throwing her to the floor. Her brother picks her up and carries her as she says her last goodbyes including the love she has from Draken and Mikey states how he imagined her future to be and that she can do all these things. The last things she says before passing is to a crying Takemichi to take care of Mikey for her, before going limp. Mikey tries to wake her back up with no avail.

Due to Mikey and Takemichi time leap to their childhood, the events of the series was altered including Emma's death leading to being Emma was revived.