1. According to the website of Vertex Fiction, Blue in the Blue Ocean began to be serialized on April 2, 20 14, and was still being updated as of June, 2023 1 14.

2. "Blue Sea" tells the story of Kitahara's Zhiyi entering the university and starting to stay in the diving equipment shop "GrandBlue" run by Uncle Izu. The waves, the blazing sun, and the lovely cousins who began to live together began their youth college life.