- Current Name: Ichigo Rinahamu
- Real Name: 横山利奈 / Yokoyama Rina
- Birthday: April 11, 1992
- Age: 27
- Height: 154cm
- Joined: Late 2010 founding member
- Left: June 24, 2011
- “Silly” member
She left BiS after disagreeing with Pour Lui on the direction the group was going. After the Paprika video, which features the members kissing and headbanging with stockings over their heads, she began to disapprove of the groups increasingly un-idol like behaviour. The last straw was hearing the plans for the My lxxx music videos, where members would run naked through Japan’s famous suicide forest. She quit before the filming of the video.
She performed with BiS once more at their final disbanding live July 8 2014.
She went on to form/produce Akishibu Project. She was a part of the group from October 2012 – May 11, 2014.
In 2015, she formed a duo group named BPM15Q with herself (now performing as Ichigo Rinahamu) and Nicamoq. On Nicamoq’s departure in December 2016, the group underwent huge changes. Come January 2017 the group name changed to CY8ER and they currently have 5 members.
Despite CY8ER being Rinahamu’s main focus since 2017, she still went on to form a further 2 groups to produce: DOPING BERRY (2016 – 2017) and Strawberry Syndrome who have been on hiatus since July 2017.
She also does modelling, is a DJs and has her record label – ICHIGO STYLE.