Summer Sweet Song

After a passionate night with wealthy Ariyoshi Shinji, Itou Natsuka is betrayed by her sister Kikka, who exploits her connection with him. Six years later, Natsuka crosses paths with Shinji again, now as his legal advisor. Despite Kikka's continued meddling, Shinji repeatedly comes to Natsuka's aid. As hidden truths emerge, the three navigate their complex ties, striving to build a genuine family.