after death there are different possibilities... during brahma day (sakala, saguna). In saiva siddhanta there are 3 states: kevala avastha (anava state, primordial slumber state), sakala avastha ( when the soul awakens from mahapralaya) and suddha avastha..
During sakala period the soul have body, gunas, tattvas (36), kala (time), kalaaa (energy), bhuvans (worlds) and so on...
28 hellish worlds (or more) under seven patalas (7 underground worlds) are being created.....as well as celestial planets and lokas...
In dual philosophy of Madhwa there is an eternal hell (adha tamisra), where eternal demon of time sleeps...Demon Kali कलि, the lord of Kali yuga...
During the evolution of time (game of dice in Mahabharata) lower worlds and the realm of eternal hell begin to penetrate the middle world (jambu), since the middle world is in a central position...

At the time of death, memory and impressions recorded in budhi (mahat), and during bardo.....messengers of yama (mahakala) come for the soul....
But you can slip away from the court using phowa, gilgul.....relocation methods....of course your memory and personality actually disappear...
some remnants and habits can be transferred....this can be done many times during sakala...
but in general....Oh..well....

But hells and celestial planets, 14 lokas, brahmanda cocoon, were created for soul evolution during sakala avastha...when karmamala is active... In saiva siddhanta there 3 or 5 malas. Anavamala (root mala), mayamala and karmamala...
In this school the most dangerous is not eternal hell, but primordial sleep (mahapralaya)... This is not sushupt (dream without dream)...

During this night, karmamala and mayamala are inactive...Gunas also inactive....there is no kala, nor worlds, no hell....nor 36 tattvas...
Anavamala (primal evil) only.... root mala in a primordial slumber state makes the soul forget God and all things...
souls become like atoms....anu... .No karma there, no body there...nothing
Only the soul and root mala alone...

Our body in this school (saiva siddhanta) is created from mala... Mala not consciousness... In is acit, asat....From mayamala 36 tattvas are created, antahkaran - also asat....ego and memory does not play a big role....
These mental bodies are not soul. These are soul tools.... but kundalini is cit, sat....

Arul shakti illuminates the body when she rises and the wheels spin faster, primordial evil also awakens since our body created from mala, and mala is acit...
anavamala is invisible....she doesn’t reveal herself....
Therefore raising the kundalini is very dangerous.... if you do not dissolve all the bodies completely... (since the body is a resource through which root mala affect the soul.)....it may not kill you... but invisible darkness will cover the soul....