Board Thread:Questions and Answers/@comment-2600:1700:B9C0:7AE0:2C2E:37BE:6D29:9E72-20190724145447/@comment-35473282-20190724151917

Everyone's memories of a ReLIFE subject are only erased after the experiment ends - i.e. when they return to their adult form for good. Chizuru's experiment lasted two years instead of one in the same school, so no memories were erased between year one and year two. I hope this clarifies the matter for you!