Four months after the disbandment of the parent group Folder5, he began to appear on TV Tokyo's evening entertainment program "XEBEC ONLINE" in October 2003 as a high school student and under the name "満島ひかり", serving as a deputy host, during which he worked until he retired from the show in March 2005. At the same time, he transferred from VISION FACTORY, the agency of the former singer, to the subsidiary Palette. At this time, although Mandao wanted to be an actor, he failed to accept many auditions, so he still mainly took photos and appeared on variety shows, wearing wigs to be funny and imitating in the show, and also participated in various drama auditions. Mitsushima once said that his main job during that period was not his passion, and "I gradually didn't know what I was doing." The feeling of having no place to stay, physically and mentally exhausted, and even roaring and wandering in the streets at night", began to fall into a low ebb. The reason why he stayed in Tokyo and did not return to Okinawa was that he had a vague feeling that he had something unfinished.

It wasn't until 2005 that he was selected to participate in "Ultraman Max" in the audition, and officially embarked on the road of actor with this film. Mitsushima plays an expressionless artificial robot in the film, and because of his participation in this series, he also cooperated with more than a dozen directors such as the well-known Takashi Miike for the first time, and during the filming process, different directors often put forward different acting requirements such as "expressionless sadness". The following year, Mitsushima first gained attention for playing the protagonist's sister in the topic film "Death Note". Since 2007, he has played small supporting roles and tricks in various TV series. In 2008, he participated in NHK's dance-themed morning drama "Hitomi" and showed his dancing talent in the play.

In 2009, the business ushered in a major turnaround. The film "The Exposure of Love" released in the same year, so that the well-known Mandao at that time surprised the audience with his crazy and explosive performance, and the topic and popularity rose sharply, and he also won the Film Shunbao Award, the Baozhi Film Award, the Yokohama Film Festival, the Mainichi Film Award and other newcomer awards and the Best Supporting Actress Award. In the same year, he transferred to Humanité, an agency mainly planning actors. In 2010, four consecutive movies were released, including "Fragments", "Say Hello from the River Bottom", "Wicked", etc., and in terms of TV series, he participated in the comedy "Dick Silk's Counterattack" and other dramas, and won her first Tokyo International Theater Festival Assistant Actress Award for this drama, only about four episodes, during which she also played various roles such as villains, bad girls, and ordinary OL who who are out of power, and was called "personality actress" by the media.

In 2011, he participated in NHK's morning drama "Sun Gong" and Fuji TV's July summer drama "Survive Still". In the latter drama, the guilt of the perpetrator's family has won many recognitions, and he has won the Best Supporting Actress award by various TV weekly critics, the well-known Hashida Award for newcomer, and the Best Actress Award in the TV drama category at the NHK Film Art Awards. In September of the same year, the "Mishimashima Hikaru Film Festival" held in Yokohama City, Kanagawa Prefecture was unveiled, becoming the second actor to win the title of the Yokohama Film Festival after the "Hiroshi Yakusho Film Festival" in 2009, and won the Outstanding Supporting Actress Award at the Japan Film Awards for three consecutive years, which is also a rare example of the Japan Film Awards.

In 2012, the four-episode NHK BS Premium special documentary "The Pioneers" was the first TV series in which Mitsushima starred in it. In the play, she played the role of a Japanese "reclamation group" woman who married alone in Northeast China during the World War and took root, and her perseverance won the Outstanding Leading Actress Award in the TV Drama category of the Picture Art Awards.

In 2013, he played the role of "Xiaochun", a single mother suffering from aplastic anemia, in "Oman", which was the first starring role in a private TV station. Mandao's touching interpretation of the resolute single mother in this play was well received by all parties, and the critic: "I am once again impressed by Mandao's acting skills." The eyes and lines are so natural that people can't feel that this is a play, blooming with outstanding light. There is no one better suited than Mandao to play a character who is full of misfortune but strong in the face of adversity." Mitsushima has also won the 68th NHK Picture Art Awards, the Tokyo International Theater Festival Best Actress Award, and the Broadcasting Culture Fund Award for Acting Awards, among which the Broadcasting Culture Fund Award is one of the three major honors in the Japanese television industry, the other two being the Galaxy Award and the Agency for Cultural Affairs Art Festival Award. Since 2012, he has extended his acting tentacles to stage plays, performing at least four plays in two years, and won the Best Newcomer Award at the 21st Yomiuri Stage Drama Awards.

And in the following years, Hikaru Mitsushima reached the peak of his career.

Although Hikaru Mitsushima has become famous, her momentum is not comparable to that of girls such as Keiko Kitagami, Maki Horikita, Yui Aragaki, and Haruka Ayase.

"Zhu Zisang, I look in a good mood today. Hikaru Mitsushima quipped.

"It's really not bad, after all, I'm going to listen to Mishima-san's singing at the scene today. I'm looking forward to seeing what you do. Zhu Zi said with a smile.

"Aligado, Zhu Zisang's praise is really a great honor for me. But Zhu Zisang, you are no longer a director, in fact, I am looking forward to cooperating with Zhu Zisang in TV dramas. Hikaru Mitsushima smiled.

Zhu Zi smiled slightly, sure enough, his charm was unstoppable.

I can't use simple words to describe myself as amazing and talented.

"Mishima-san, in fact, you can think so. Although there is a lack of a giant in the directing world, there is one more master in the music world. Zhu Zi didn't know how to blush at all.

Mitsushima laughed.

…………

At noon, three members of AKB48, Mayu Watanabe, Erika Ikuta, and Aya Yamamoto, as well as Mai Shiraishi, Reika Sakurai, Reina Matsui, Nanami Hashimoto, Nanami Nishino, Yumi Wakatsuki, Rina Ikoma, Kazumi Takayama, Hiyaka Nakamoto, and Minami Hoshino, also arrived at the hotel.

The girls are all well-behaved, especially Ikuta Erika, Zhu Zi can't believe that such a well-behaved and hungry girl is Ikuta Erika.

He also thought he had seen a fake Ikuta Erika tweed.

"Ikuta, are you stimulated by something? Why are you so well-behaved? Zhu Zi finally couldn't help but ask.

"Teacher Zhu Zi, I don't dare to agree with what you said, I didn't say the same before. You don't inquire when you go to AKB48, if you are the second in AKB, who dares to call it first. Ikuta Erika said lightly.

"Flowey, don't blow it. Teacher Zhu Zi, Ling Na Chan and Ma Youyou don't know you, are you well-behaved? You are simply a little witch. Before Zhu Zi could speak, Mai Shiraishi jumped out.