Complex sentence: That said, according to Cologne, Akane confessed her true feelings under the influence of the reversal jewel, claiming that she loves Ranma with all her heart more than anyone in the world and is sorry for being so angry.
Split into simpler sentences: That said, according to Cologne, Akane confessed her true feelings under the influence of the reversal jewel. That she loves Ranma with all her heart more than anyone in the world, and is sorry for being so angry.