Complex sentence: Her rival and crush is Shizuma Kusanagi, the "Red Monkey", though she is also in love with Tatsuya Shishikura, the Captain of the Kendo team she also helps out the drama club with the school plays.
Split into simpler sentences: Her rival and crush is Shizuma Kusanagi, the "Red Monkey", though she is also in love with Tatsuya Shishikura, the captain of the Kendo team. She also helps out the drama club with the school plays.