In early 2019, Takase released her first independent EP, “Sea‑Breeze” , on the Mirae Sound label. The EP comprised four self‑written tracks, blending acoustic folk with lo‑fi electronic textures. Critics highlighted her soft, breathy vocal timbre and lyrical focus on “mundane moments turned luminous.” The EP sold 3,400 copies in its first month—modest but notable for a self‑released project in Japan’s crowded indie market.

Nanami didn't speak. She simply picked up the wooden box and set it on the counter between them.

"Takase-san?" Sato asked tentatively.

In 2019, Takase tackled the treacherous Tsugaru Strait. At one point, a powerful current began dragging her toward a shipping lane. Her support boat frantically signaled her to change course. With her arms moving on autopilot, she later recalled seeing ghostly shapes in the green-black water and hearing the low thrum of tanker engines above her. She pushed through 15 hours of relentless combat with the sea to become one of the few women to successfully complete that leg.