Kagerou: Koga Twin Sisters (Patreon)

A new pair of elite Koga ninjyas.....greeted by an unexpected intruder during their probe!

Several days after our earlier Koga girl had accepted the mission of salvage the scroll, her sisters found that she had not come back. Anxious, confused and worried, they decide to dive into the shipwreck. In the wreck they find their sister's sword, but now an huge octopus treats the shipwreck as its new home, angry with the two Intruders and ready to attack.