In Chapter 10, Hyo-sung and Ji-ho talked about that Woo-hui's standards for lover may be very low. At that time, it was mentioned that last year and Jae-yong sunbae.
I don't think this section is redundant. Although some actions are repeated, but it also contains some new information. This is a long serial manga, not everything will be brought out quickly, so just savor slowly and carefully.