Ayase Manaka (綾瀬まなか) is a former 2nd generation member of AKBN 0 and it's sub-unit CHANCE. She left the group on 29 April 2013 because she wanted to focus on her basketball training and the activities in the group wouldn't let her have the time for.
- Name: Ayase Manaka (綾瀬まなか), Ayase Manya Manaka (綾瀬まニャまなか)
- Birthday: November 27, 1997
- Birthplace: Saitama, Japan
- Blood Type: A
- Height: 152cm
- Favourite Idol: Maeda Atsuko
- While in the group she was known as the Yuuka from Saitama
- Was in all the group singles the group released while she was in the group.
- She was the center alongside with Yoshikawa Kotono in the 4th single Let's get all
- Was one of the original members of the sub-unit CHANCE alonside 5th Generation member Maeda Irori