okay I have recovered i will now be talking about my thoughts about B me and how it could correlate to the timeline with On Track, as a post cursor (?)
we see felix holding a film strip negative ofc,,,
to me it looks like two people but ( no clarifications yet)

tw // fire , burn
the main reasons i think there is a corelation btwn on track and b me
is this scene; in which jisung is burning a contract (?) document which is titled ( its in korean so don't h word me if I'm wrong but this is what i understood)
an office for a short film,,,

adding to the fact that this reel was present during on track too,,,,

seungmin carrying a diary in both tracks

seungmin looks visibly engaging in on track but in B me,,, he looks devastated (?) , regretful (?)

{again these are just my analysis}

The book - "In the Country Of Men by Hisham Matar" is shown here along with the on track sheet (?) pertaining to their film perhaps
and the critics review of the book (?)

the book in general describes a lot of worldly issues , i will link good reads for those who want to know more , but in my opinion the reason why the book is kept along with this is because of the child being portrayed in said book ; https://www.goodreads.com/book/show/63657.In_the_Country_of_Men

the boy is confronted with different situations in his life that contradict his childhood,,,much like how skz had to give up a huge chunk of their childhood to become idols and the obstacles during that

{this is just my opinion, i haven't read it, but i might later to undrstd}

!! AUTHORS NOTE !!

reviewers have mentioned that the book could be disturbing so incase anyone wants to read be careful <3
moving on

now this is just based on symbolisms i know and have heard of ,,,, it may or may not have any correlation

this thread is just based on my first thoughts

after the scene with hyunho we see this next..a burning car - vehicle indicating yourself your spiritual self anyways
and the

cw // fire ment

fire meaning emotional aggression, personal problems something eating away at you...

now whose self is it we don't know bc in on track minho is with the lead and hyunjin stops the progress which could mean its hyunjins self and minho hurting with the result??

the reason why jeongin runs to minho following the burning scene is bc as we know in on track jeongin and hyunjin have a close bond (?) or jeongin is looking out for minho,,,,