Complex sentence: Near the end of the manga series it is also shown that Shiina has been diagnosed with leukemia and that is in great need of treatment, but despite this she remains strong and travels to Korea along side Ooshi to support Hikari while she competes.
Split into simpler sentences: Near the end of the manga series it is also shown that Shiina has been diagnosed with leukemia and that she is in great need of treatment. Despite this she remains strong and travels to Korea along with Ooshi to support Hikari while she competes.