Its the first one but who created the other pools forgot about this one, oops.
Original uploader forgot to upload the "non white belly" version of the last frame, I did it and re-organized as the original Pixiv gallery so the variations are the end like in that.
Previous pools
#1 - https://e621.net/pools/11444
#2 - https://e621.net/pool/show/10400
#3 - https://e621.net/pool/show/10718
#4 - https://e621.net/pool/show/11438
https://www.pixiv.net/en/artworks/10738849
モジャンボ×シャワーズ①
一度は描いてみたかったモジャンボ触手もの。差分と駄文でえろげ風味にしてみました。形式・容量的に、スライド表示をお勧めします。