Use 30 rectangle (2:3) sheets of origami paper.
Difficulty : ⭐⭐⭐
Time: 2.5 hours
The spike looks like okro (กระเจี๊ยบเขียว) and the gap looks like okro cross section.
The unit is from Red Devil designed by Kankichi.
Model paper size:
Unit (mint) : 5 cm x 7.5 cm
Model height: ~10 cm
PrwOrigami - Kusudama Collection