Type N is a version of the B-side song "Punk Rock" sung by NMB48. In addition, this version also includes the new song "The Story of Shoes and Umbrellas" written by Yasushi Akimoto for NHK's long-established music program "Everybody's Song", and the accompanying DVD also includes the MV of two songs. In terms of cover design, the front and back covers of Type N include photos of Rina Ikoma, Yuria Kisaki, Rino Fingerara, and Yui Yokoyama.

Type H is a version of the B-side song "Big Train" sung by HKT48. In addition, this version also includes the only detachment song of the single, Team 8's "Start with Greetings", and the accompanying DVD includes the music videos for both songs. In terms of cover design, the front and back covers of Type H include photos of Anna Iriyama, Mako Kojima, Erika Ikuta, and Mayu Watanabe.

In addition to the main A-side song "Green Flash", the B-side song included in the theatrical version is "The Story of Shoes and Umbrellas", which is the same as Type N, and the new song "The Stamens of First Love" with the cross-group team Little Ladybug Chu!. The cover of this edition features a photo of Yuki Kashiwagi and Yona Kojima, and the back cover is a photo of the 16 singles members.

The lead single "Green Flash" was written by executive producer Yasu Akimoto, composed by Brazilian-born Japanese composer Carlos K., who once wrote the solo single "Dear J" for Tomomi Itano, and arranged by Yu Sasaki, who often collaborates with the AKB48 group. The music video for this song is directed by Hirokazu Kore-eda, the film director who worked with AKB48 on the MV for his 20th single "Turning into a Cherry Blossom Tree".

A total of 16 members of the single selection team participated in the recording and MV performance of this song, and according to the age of the members, they were divided into two groups: older and younger. Among them, 8 people in the junior group were mainly responsible for the performance of the story part of the story in the MV, and all of them tried to shoot the crying scene, while 8 people in the senior group were in charge of the singing part of the picture. Because of this grouping, the 16 members never appear in the same frame at the same time in the MV, and there is no clear dance formation scene in the film, but during the stage performance, the members of the front row who stand on either side of Yona Kojima and Yuki Kashiwagi are Minami Takahashi and Aya Yamamoto, who are responsible for rappers in the chorus.

AKB48

Team A: Anna Iriyama*, Rina Kawaei*, Yona Kojima, Haruka Shimazaki*, Minami Takahashi

Team K: Mako Kojima*, Erika Ikuta, Minami Hoshino (46 Nogizaka concurrently)

Team B: Rina Ikoma* (member of Nogizaka 46), Yuki Kashiwagi (member of NMB48 Team N), Mayu Watanabe

Team 4: Yuria Kisaki*

SKE48

Team S: Rina Matsui* (also a member of AKB48 Team K)

NMB48 Team N: Aya Yamamoto (also a member of AKB48 Team K)

HKT48

Team H: Refers to Rino Hara

Team KIV: Sakura Miyawaki* (also a member of AKB48 Team A)

In this single, Yona Kojima, one of the double centers, was the 33rd single "True Current" when she was a member of the center last time. Yuki Kashiwagi, another center, is a veteran member of the group for 9 years and has released several solo singles and is well-known, but this is the first time he has served as a center since joining AKB48.

Rina Ikoma and Minami Hoshino are two girls who have once again entered the AKB48 singles list.

This made fans of Nogizaka 46 and AKB48 dissatisfied, but the two girls accepted it more calmly.

Although the two girls may be a little more tired in this way, they also have more activities to expand their foreign affairs.

Why Minami Hoshino gained weight so quickly is not because AKS's food is too good.

Ikuta Erika also takes great care of this sister who is one year younger than herself, and often gives her delicious food, if Zhu Zi knows this, she will definitely be very angry.

The B-side song "Is It Really True" included in the second track of Type A was written by Yasushi Akimoto, who once composed "Summer Free & Fight" for Nogizaka 46. amp; amp; amp; amp; Easy" was composed by Tomotoku Inoue and arranged by Maon Kushita. This song is the opening song of the TV series "Majisuka Gakuen 4" performed by AKB48 broadcast by Nippon TV, and is sung by Haruka Shimazaki and Sakira Miyawaki, who co-starred in the film, and many members who participated in the show. Since the music video for the new song is an edit of clips from a TV drama and a separate singing video, there are also many shots of AKB48 Group members who did not sing the song but appeared in the TV series.

The B-side song "Summer When Spring is Approaching", which is included in the third track of Type A, was written by Yasu Akimoto, composed by Amber, and arranged by Malaysian-born composer Yeo Keng Ho, who wrote "First Rabbit" for AKB48. Participating in the recording of this song was the "AKB48 Selection" team composed of 16 members, and although it was only a B-side song, all the core members who were listed were experienced in singles selection.

In the music video, Mayu Watanabe is the centerpiece of the dance formation, and Haruka Shimazaki and Mako Kojima serve as front-row members on either side.

The B-side song "Mixed Rock", which is included in the second track of Type S, is written by Yasu Akimoto, composed by Chalaza, and arranged by Yuichi "Masa" Nonaka, who often collaborates with AKB48. Corresponding to the "Come Really Fight" included in Type A, "Gangster Rock" is the ending song of "Ma Lu Suga School 4", and the participants in the recording of this song are the other members of the show who did not participate in the singing of "Come Really Fight". This song is sung by the main supporting characters in the TV series, Nanna Owada and Mako Kojima of AKB48, and like "Is It Really Fight", since the MV of the new song is edited from the TV series clips and singing clips, there are also many members who have not sung this song in the MV.

The B-side song "If the World Is Crying", which is included in the third track of Type S, was written by Yasu Akimoto, composed by Yuma Kawashima, who wrote the single "Kissing is also left-handed" for SKE48, and arranged by Yuichi "Masa" Nonaka. This song is sung by the "SKE48 Audition", which is composed entirely of members of the sister group SKE48, and although it is only a B-side song, almost all of the members of the SKE48 single selection team participate.

Directed by Nobuaki Hongo, the music video for this song is shot like a movie trailer, set in a girls' high school, and tells the story of a high school girl played by SKE48 who has an unrequited love for the school's male teacher but does not get a response, and then the police intervene to investigate which female student is the real murderer. Since there is no dance scene in the MV, there is no arrangement of formation and center members, but in the plot, Surina Matsui plays the main role.

Matsui Jurina has been enjoying the best resources of SKE for so many years, but because of her positioning and personality, her reputation in the outside world is quite average, and it can even be said that it is bad.