Tsubarika

Tsubarika is the femslash ship between Tsubaki Aoyagi and Rika Seto from the D4DJ fandom.

Canon
Rika and Tsubaki are childhood friends as well as the main vocalists of their respective DJ units, Merm4id and RONDO. In addition to this, they attend the same university together with the other Merm4id and RONDO members. The two were classmates and friends in elementary and middle school, but got separated in high school. Their first major interactions happened in D4DJ: Groovy Mix's third event story, which also revolves around Rika trying to reconcile with Tsubaki during their hot springs trip.

Sun, Fun, Moon & Steam!
Throughout the event, Tsubaki claims she doesn't want to talk to Rika and does her best to avoid the latter, even going as far as running into the sauna.

D4 FES. -Happy Moment-
In the event, the girls are paired up into 6 different mixed groups, with one of them consisting of Tsubaki, Rika, Miyu and Aoi. The moment Rika steps into the hotel room and sees Tsubaki, she jumps in to hug her, much to Tsubaki's embarrassment.

♯Party ♯Resort ♯Survival
In Tsubaki's Episode, titled "The Time That Fate Linked Us Together",

Fanon
Although not as popular as Tsubaoi, Tsubarika has a fair amount of supporters. Fans of the ship especially enjoy their status as childhood friends, as well as the way Rika enjoys teasing and being close to Tsubaki, and how the latter in turn usually gets embarrassed or denies the things Rika says.

Fandom
FAN FICTION

Trivia

 * The two were featured together in D4DJ: Groovy Mix's app icon at one point.
 * In one of their live interactions, Rika enthusiastically shouts they'll get things done with the power of friendship. In another, she calls Tsubaki with the nickname "Tsu-chan", who then gets flustered and mumbles how she needs to do her best to concentrate.