Rumors have surfaced that actress Rosa Kato and KAT-TUN member Jin Akanishi are currently dating. According to weekly tabloid FRIDAY, Akanishi once spent 17 hours at Kato's apartment.

In May, the magazine spotted Akanishi driving Kato home after a meal. Then earlier this month, he reportedly stayed over at her place for 17 hours, and continued visiting during the following week.

Kato was recently rumored to be dating actor Hiroshi Tamaki, but they are said to have broken up. Kato's agency says that she's friends with both Tamaki and Akanishi, and denies that she has dated either of them. As for the alleged 17-hour stay, her agency stated that he was simply one of a group of friends having a party there. Akanishi's agency also says that the two are just friends.