What's Wrong with Secretary Kim?, Vol. 5 (manga)

Miso finally regains her memories and learns that the boy she’d been searching for has been by her side all long. Now that Miso and Youngjun are free to bask in each other’s love, the only thing left is how to break the news to the people around them—including Miso’s unconventional father! But even as Miso and Youngjun finally start a new chapter in their lives, the truth has left Sungyeon devastated and wracked with guilt... Will past tragedy continue to keep these brothers apart, or will they finally mend what’s broken?