Personality Exchange

Personality Exchange (人格入れ替わり) is the first abnormal phenomenon caused by Heartseed and is featured in Hito Random. Later in Asu Random I, the Track & Field Club is plagued by this phenomenon.

Description
The members of the StuCS all exchange personalities (trade souls, essentially) at random between each other and at random times until Heartseed is satisfied. Any combination of exchange is possible, such as 3 people switch or all 5 switch at the same time. Each exchange can potentially last from a few minutes to a few hours.

Initially, exchanges would leave the members briefly fazed, often leading them to collapse on the spot. However, after several switches, the members are no longer prone to collapsing and can immediately react to their exchange.

As revealed by Heartseed, should a person die while their personality is switched, the soul that is currently inhabiting the diseased will die with the body.