confused about the level cap

[Icedfate]

i just began second semester and my level cap was raised to 40.

everywhere online i see that the cap is 15 in the first, then 40 in the second semester.

however, when tou go into status : blood and look at the abilities, it says at level 99 you get a mastery bonus and there's a steam achievement for it.

so, is it like, 40 for the second semester, but there some post game bonus dungeon that raises the cap to 99?

[Icedfate]

welp, nobody answered , but i discovered just while playing the game, the level cap is 40 until beating the final boss of the post game.
after literally doing everything and beating every enemy and clearing every dungeon, the game rewards you by raising the level cap to 99.
.
.
but what now? if i've done everything the game, what's the point of grinding up to level 99?
and where am i supposed to grind all these levels? i'm supposed to kill wyvern omegas on babyl c24, 10 minutes of fighting to get 5k xp when i'm probably gonna need millions?

i mean, yeah, my squad's equipments are still in the mid to low 30's. i can farm for better gear and as i level up, i guess those enemies will get easier, but this sounds like hundreds of hours worth of grinding, but there are no "goals" left in the game. unless you count getting to level 99 as a "goal".
i still have a couple of steam cheevs left to go (not sure how i don't have the survive 3k battles yet, either it's glitched or i am overestimating hiw many battles i fought, the game doesn't tell you, it tells me i have killed 12k+ enemies, but lots of those are drills that appear in huge groups, so maybe i didn't fight 3k battles yet. . )

I assume it's because on the PS vita version, these games were meant to be "episodic serials"?
semester 1 was the first game in the series
semester 2 was the second
and i guess operation babel (which i also own) is supposed to be the third game that wraps up all the loose plot threads, like how we get into the abyss tower and stuff which is left unanswered in this game?

but then, i read on the operation babel forum, you can't even import your characters from this game into that one, so then what's the point of grinding to level 99 in this?

[maxniny]

這是設計者的骯髒手段，我連續集都不想安裝了。

[Icedfate]

the game is still good . i just saw no reason to grind levels up to 99.
i played through the sequel , Operation Babel, and i had to start again with level 1 but now i have my group between level 55-70. babel has higher level items and the post game has better grind spots and a level 99 ultimate boss, which i did not beat yet.
and they also added a super fast auto battle command, so yeah.

this game is good, but no reason to get to level 99. just do it in the sequel .