Kodama Haruka making fun of her rare photo

HKT48 member Kodama Haruka found her rare photo is very funny and mentioned it on her official 755 account, but she did not indicate which one she is talking about.

Fan: What is most funniest thing you think recently?
Kodama Haruka: My rare photo

Reference: http://7gogo.jp/kodama-haruka/3980

Kodama Haruka: Though I can not indicate which one, the face is very interesting

Reference: http://7gogo.jp/kodama-haruka/3982

Kodama Haruka's netshop limited rare photo (January 2016)
Reference: http://shopping.akb48-group.com/products/detail.php?product_id=36845&akb48