The Switch version will include multiple new event scenes. The opening movie featuring new event scene visuals will premiere at Comic Market 100 from August 13 to 14 at Tokyo Big Sight.

Aokana: Four Rhythms Across the Blue – EXTRA1 first launched for PC on June 30, 2017 in Japan.

Here is the story synopsis, via VNDB:

A senpai who she admires.

The senpai who she loves.

Friends with whom she could confide her worries and do her best.

Just by showing a little bit of courage, she was able to obtain so many precious relationships.

Mashiro thought that she has finally reached the happy end. However, she was barely passing her classes. She lost completely in a sweets battle to Rika and Arika. On top of that, Misaki and Asuka declared that they are Masaya’s lovers!? At this rate, her dear senpai would be taken from her, she’ll have to repeat a year, and Mashiro Udon would go out of business!? Mashiro’s mother, Botan, suddenly suggested that she and Masaya go on an overnight date. She declared that she’ll make a tasty bento for him and dress up nicely. With the help of the others, she trained really hard to up her feminine qualities before the date. Will they reach the true happy end!?

Aokana: Four Rhythms Across the Blue – EXTRA1 is the after story for Mashiro, one of the two highest voted in the Aokana: Four Rhythms Across the Blue character popularity poll.