i standby all when declaring the artwork in this being incredible - the central detailed tower, the shadows of soldiers, and the derpy enemies, i feel like they should clash and yet, it perfectly emulates a child's doodling in a beautiful way.
it takes the classic tower defense feeling and tries something new! i like it. i think additional friendly units and some tweaking to the drawing mechanic would help it a lot.
INSANE that this is your first game jam - incredibly work and a huge kudos to the two of you!
mugi, you're pretty good on the keys of a piano but you may be even better on the keys of a computer.