| Ikujinashi Masquerade | |
| Border: | yes |
| Type: | single |
| Artist: | Rino Sashihara with Anrire |
| Released: | (Japan) |
| Genre: | J-pop |
| Label: | Avex Trax |
| Producer: | Yasushi Akimoto |
| Prev Title: | Soredemo Suki Da yo |
| Prev Year: | 2012 |
is the second solo single by Rino Sashihara, a Japanese idol singer who is part of the AKB48 sister group HKT48.[1] It was released in Japan on October 17, 2012.[2] It features the unit Anrire, whose name is a portmanteau of AKB48 members Anna Iriyama, Rina Kawaei and Rena Katō.
The single charted at number one in the Japanese Oricon weekly singles chart, which made it only the third solo single by an AKB48 member ever to do so.[3]
The single was released in four versions:[4] Type-A, Type-B, Type-C, and Type-D.
Mu-mo shop limited edition.
| Chart (2012) | Peak position | |
|---|---|---|
| Oricon Daily Singles Chart | 1 | |
| Oricon Weekly Singles Chart | 1 | |
| Oricon Monthly Singles Chart | 6 | |
| Oricon Yearly Singles Chart[5] | 93 | |
| Billboard Japan Hot 100 | 4 | |
| Billboard Japan Hot Top Airplay | 53 | |
| Billboard Japan Hot Singles Sales | 2 | |
| Billboard Japan Adult Contemporary Airplay | 39 |