Shintaro Kago produces both of these abstract and rather explicit pieces. Both give a glimpse of the human persona/emotion through rather interesting means. If you liked one, you'll probably like the other.
If you ask me the work of Shintaro Kago follows an identical pattern; somewhat stylish yet profoundly revolting artwork combined with surreal plotlines and bland characters.
If you for some reason liked Abstraction, then make sure to check out Fetus Collection. They're both utterly tasteless stories with impossibly crude characters and explicit depictions of love and sex.
Two short absurdist gag manga that take an experimental approach to presentation. Both subvert manga's traditional paneling (i.e.- panels become 3-D, or branch out non-linearly), and the actual story often takes a backseat to this experimentation.