To Heart: Remember My Memories  

th rmm, ToHeart Remember my memories, ToHeart-r, トゥハート Remember my memories, トゥハート ～Remember my memories～, ToHeart ～Remember my memories～

The passage describes how time has passed since Hiroyuki and Akari were in 12th grade. They and their friends have grown physically or mentally over time. However, one of their best friends, an android named Multi, is missing. To their surprise, Multi returns to their campus unexpectedly, but she is not the same Multi they knew before.