DiverDiva is a unit under the Nijigasaki High School Idol Club. The unit consists of two members, namely Karin Asaka, and Ai Miyashita.

The group was formed in phases:
1. On March 2019, nine different combinations were offered to be chosen from.
2. On May 2019, the unit compositions were revealed, and people were asked to submit names for them.
3. On May 2019, the choices for unit names were revealed.
4. On June 2019, the chosen unit names were revealed.

Due to the image presented by the members, many of the name submissions had meanings giving off mature and fresh vibes. Many submissions also contained puns, a reference to Ai's love for creating puns.
"Diver" comes from Odaiba, the town in which Nijigasaki High School is located, and also represents the two members "diving" into the hearts of their fans.
Other highlighted submissions are "SoLuna" and "Beat Cats!!"

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