Can't trigger the Alchemy Class Storyline

[Kiranos]

Hello, is there an additional requirement to this story line ? i've tried staying in the tower of water with three Health potion equiped for a few hour but it won't trigger, even after using a few time piece for random event and having the Bend the Odds buff actif.

[Hentaika]

It's RNG.

'Random trigger type'(events which are not instantly gotten via certain conditions) events are totally random and I don't think there is any pity limit, they might trigger on 1st event and might not trigger for a 100(although it's unlikely)

Some have much higher chance of appearing, usually the ones which have multiple choices.
The 'happen once' ones are usually more rare than those.

My recommended way to trigger events is to abuse the manual saving via the code and using the 'time piece instant event'.

Having bend the odds while doing the abuse helps.

[Serpentarius]

Bend the Odds is boerderline mandatory after a while as you can go hours without otherwise.