Complex sentence: Smith then contacted Takachiho Haruka, the creator of the "Dirty Pair", who was much more impressed with Warren's art and Smith's ideas and agreed to license the characters for an American comic.
Split into simpler sentences: Smith then contacted Takachiho Haruka, the creator of the "Dirty Pair", directly. Haruka was much more impressed with Warren's art and Smith's ideas and agreed to license the characters for an American comic.