Wow, cool. I remember I loved the first Kuchitsu. Accidentally discovered in a DW thread about relaxing wads. The sky, level design and not very punishing gameplay made it for me. I'd definitely have to play this sequel asap.
I just realized Memfis was the author of Kuchitsu 1, and you made number 2. Somehow I thought it was the same author for both. It felt different but I noticed the satire there, with weird textures and slanded Plutonia level end start, and other silly elements. Especially map 3 was pretty fun to play.