[Penumbra Planet Research] PDF High-res color version (24-page comic) Including gendermorph, feminization, masculinization, genderbend, alientf, butterfly girl tf, snail-man tf, butterfly man tf, mushroom girl tf. A research team from Earth/ from other places in the galaxy comes to the same place to study several types of mushroom - a main environmental element of Penumbra and figure out its residence - the butterfly, mushroom and snail man!