| Koigokoro | |
| Cover: | AikawaNanaseKoigokoro8cm.jpg |
| Border: | yes |
| Caption: | 8cm single cover |
| Type: | single |
| Artist: | Nanase Aikawa |
| Album: | Paradox |
| B-Side: | Tenshi no Yō ni Odorasete |
| Genre: | J-pop |
| Label: | Motorod |
| Producer: | Tetsurō Oda |
| Prev Title: | Break Out! |
| Prev Year: | 1996 |
| Next Title: | Trouble Maker |
| Next Year: | 1997 |
is a song by Japanese recording artist Nanase Aikawa from her second studio album Paradox (1997). The track was composed by Tetsurō Oda and released as a single on October 7, 1996. It peaked at number 2 on the Oricon Singles Chart and was certified million by the Recording Industry Association of Japan (RIAJ).
| Chart | Amount | |
|---|---|---|
| Oricon physical sales[2] | 1,129,000< | --1,129,340--> |
| RIAJ physical shipments[3] | Million |