Dont think his project with IU would be a failure. The support resource for IU has never failed her before, not to metion the resource rich production company with an award winning script. Chemistry between the two may not be the same as Lovely Runner, yet both leading roles are experience decent actors, should be able to bring out their parts. IU has never been the type sell on romanic chemistry, the characters and story line seems to focus on different aspects to display their charms.