is the 18th single by

Japanese idol An is a type of entertainer marketed for image, attractiveness, and personality in Japanese popular culture, Japanese pop culture. Idols are primarily singers with training in other performance skills such as acting, dancing, and modeling. Idol ...

girl group A girl group is a music act featuring two or more women in music, female singers who generally vocal harmony, harmonize together. The term "girl group" is also used in a narrower sense in the United States to denote the wave of American female p ...

SKE48 SKE48 (S.K.E. Forty-eight) is a Japanese idol group produced by Yasushi Akimoto. SKE48 is named after the Sakae, Nagoya, Sakae district in Nagoya of Aichi Prefecture, where the group is based. The group performs at SKE48 Theater on 2F of Sunshi ...

. It was released on August 12, 2015. It was number-one on the

Oricon , established in 1999, is the holding company at the head of a Japanese corporate group that supplies statistics Statistics (from German language, German: ', "description of a State (polity), state, a country") is the discipline that ...

Weekly

Singles Chart A record chart, in the music industry, also called a music chart, is a ranking of recorded music according to certain criteria during a given period. Many different criteria are used in worldwide charts, often in combination. These include re ...

with 370,135 copies sold. It was the fourteenth best-selling single of 2015 in Japan according to the Oricon Yearly Singles Chart, with 459,769 copies sold. As of January 25, 2016 it had sold 461,604 copies. It was also number-one on the ''

Billboard A billboard (also called a hoarding in the UK and many other parts of the world) is a large outdoor advertising structure (a billing board), typically found in high-traffic areas such as alongside busy roads. Billboards present large advertis ...

Japan Hot 100 The ''Billboard Japan'' Hot 100 is a record chart in Japan for songs. It has been compiled by ''Billboard Japan'' and Hanshin Contents Link since February 2008. The chart is updated every Wednesday at Billboard-japan.com ( JST) and every Thursday ...

. This single marks the last appearance of

Rena Matsui is a Japanese actress, singer, and novelist. Matsui is a former member of the Japanese idol girl groups SKE48 and Nogizaka46. As a member of the former, she also participated in the main lineup of AKB48's singles. As an actress, she has played r ...

, which is center of the main track, and also sang "2588 Nichi", her graduation song (Full audio published on YouTube). Only short versions from their music videos are featured on YouTube, and full versions are included only on limited editions.

Track listing

Type-A

Type-B

Type-C

Type-D

Theater Edition

Charts

Year-end charts

References

2015 singles 2015 songs Songs in Japanese SKE48 songs Oricon Weekly number-one singles Billboard Japan Hot 100 number-one singles Avex Trax singles Songs written by Katsuhiko Sugiyama {{2010s-Japan-single-stub