|English||Kneeling shoulder drop|
|Korean||업어 떨어 뜨리기|
Seoi Otoshi (背負落) is one of the preserved throwing techniques, Habukareta Waza, of Judo. It belonged to the fifth group, Gokyo, of the 1895 Gokyo no Waza lists.  It is categorized as a hand technique, Te-waza.
Video: Alabama Judo Federation Video Channel: https://www.youtube.com/watch?v=ZWkqmG4QY4Q
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Similar Techniques, Variants, and Aliases
- Shoulder drop
Similar to Tai Otoshi, Ukes movements can be limited or blocked by Toris leg. In Tai Otoshi the leg off Tori can be extended to push uke over. Extension of the leg in Sei Otoshi will rather lead to a lifting effect due to the fixation point of the working hand.
Similar to (Ippon) Seoi nage, Morote Seoi Nage and, Eri Seoi Nage uke is thrown over the shoulder.
In the video, The Essence of Judo, Kyuzo Mifune also demonstrates Ganseki Otoshi (岩石落), where tori grabs hold of uke by the lapels to toss uke over.