Bear
Mammals - Ursidae - Bears | Sakai Eiji |  Tanteidan 22nd convention (read full review)
| 125 | Square | 
Folded by Rui Roda |
Craft glue
Objects - Various | Sakai Eiji |  Tanteidan 27th convention
| 19 | Square | |
Giraffe
Mammals - Giraffidae - Giraffes and Okapi | Sakai Eiji |  BOS Convention 2019 Autumn | 53 | Square | 
Folded by Morgan Lozano Monroy |
Giraffe
Mammals - Giraffidae - Giraffes and Okapi | Sakai Eiji |  Tanteidan 23rd convention
| 26 | Square |
Folded by Morgan Lozano Monroy |
Puppy
Mammals - Canidae - Dogs | Sakai Eiji |  BOS Convention 2018 Autumn | 98 | Square | |
Sea slug
Molluscs | Sakai Eiji |  Tanteidan 26th convention
| 185 | Square | |
Skull
People - Anatomic parts - Skulls and Skeletons | Sakai Eiji |  BOS Convention 2018 Spring | 42 | Square | |
Soft monster
Imaginary beings | Sakai Eiji |  Tanteidan 24th convention
| 83 | Square | |
Squid
Molluscs | Sakai Eiji |  Czech Origami Convention 2018-2019
| 160 | Square | 
Folded by Wilson Yeung |
Squid
Molluscs | Sakai Eiji | Tanteidan 24th convention
| 54 | Square |
Folded by Wilson Yeung |
Tyrannosaurus
Dinosaurs and Prehistoric Animals - Cretaceous - Tyrannosaurus Rex | Sakai Eiji |  Tanteidan 25th convention
| 64 | Square | |
Underground logo
Symbols | Sakai Eiji |  BOS Magazine 307 | 6 | Square | |
