Shitai no ♡ Karen-san!! - Ch. 54 - You Still Want To Do It? END

[redscizor]

I dont understand about the body rules

• Chapter 3: there isnt heartbeats, but there are metabolism and warm (her body is dead) and late a fast healing using energy
• Pool Party: There is a heartbeat, later chapter there are a lot of heartbeats
• Her body die completely in the birth, she cant return again

Was important the heartbeat, extended the body lifetime or the mangaka forgot that rule?

Extra if Sayuri stay in the world, then he is doing with Sayuri and Karen life energy transfer, when Karen was out her body, usually she dismiss very fast