Board Thread:Questions and Answers/@comment-5480414-20151017213245/@comment-10063445-20151017214339

According to our affiliated wikia [http://decaf.kouhi.me/lovelive/index.php?title=HEART_to_HEART! decaf.kouhi]

"How to Obtain: Clear Chapter 35, Part 3 of the main story (Rank 130) or clear the assignment for clearing Donna Toki mo Zutto 1 time. "