It's like watching Wile E. Coyote and the Road Runner. In the end, you feel really sorry for the coyote, Hyung Woo.
Choi Jin-Hyuk, L and other actors are excellent. The technical part of the script is splendid, explaining the terms, etc. However, the script lacks the engaging parts between the scenes that make kdrama enjoyable to watch.
Accounting is serious business, but so is medical and judiciary, but those kdrama genres like Ms. Hammurabi (L really nailed this) are able to make it engaging and fun to watch, so why does Number feel like it's being carved from stone?