When finally backed into a corner and revealed as the culprit, Mikan ultimately finds solace in her beloved, and says that her motive for murder was simply her affection for them. She claims to no longer care about anything except that person, believing they were the only one who ever loved and accepted her.

Who did Mikan love?

Expand at your own risk. It is heavily implied during and after Chapter 3 of Danganronpa 2: Goodbye Despair, later confirmed in Danganronpa 3: The End of Hope's Peak High School, that Mikan's Beloved is Junko Enoshima, who gained Mikan's trust and love through brainwashing and manipulation.

Did Mikan kill anyone?

After catching Despair Disease in Chapter 3 and regaining her school memories in Danganronpa 2, Mikan set up a plan to murder Ibuki Mioda, who also contracted Despair Disease, but ended up murdering both Ibuki and Hiyoko Saionji after the latter witnessed her attempt to murder Ibuki.