Omg. Everyone just forgets this part because OG Bakarina had fixed the Keith issue early on and convinced her mum that dad didn't cheat. But now she has to make Keith warm up to the family and fix her parents broken marriage. Jeez this is the Hard level, all right.
Also, because in the main story there are too many harem members, we don't get to see a lot of romance, but here we see their individual dynamics more. And is that Geordo/Gerald getting jealous?