"SS -扉の向こうのその先へ-" (SS - Tobira no Mukou no Sono Saki he-) is Shigotoshite-P's second album, the previous being FILL e TUA. The album focuses on classical and folk songs with MEIKO, KAITO, Nekomura Iroha and Kagamine Rin/Len as the vocals. It consist of 15 tracks, 5 new songs, and 10 published songs from the (all of which had been fully re-mastered) featuring tracks such as Rin's Girl and the Black Cat, MEIKO and KAITO's The Dawn in the East, The Dusk in the West and Iroha's Behind the Door. "SS - Tobira no Mukou no Sono Saki he-" was also re-released under the KARENT label in 2014.