It is more of using a break to take some easy money off the newbies, while also having a secret spot to do meetings without too many eyes on her.
I think I might attempt to implement some of the suggestions offered earlier (wider range to map, and also map entire rooms) at some point, and offer a new event to buy the maps for floor 10,11, and maybe 12 always on the same spot (floor 1).
Lulune is carefree and friendly to anyone. She is also attracted to money and is a skilled mapper. Thinking about it a lot of DanMachi girls try to swindle Bell but he sooner or later makes them fall in love with him instead so the "she swindled him" doesn't do much to persuade her charms. Besides the conversation is more like an informant, she has information available for a price which Bell will note was worth it. If you wanted to play up the easy mark well he could have gotten the maps from elsewhere for either a lower price or free which neither happens, she's the only one providing such a valuable service
Replayed that section to see if she came off as anything besides friendly and helpful and didn't get any negative vibes but this bit made me laugh.
Bell "(That being said, I am forcing myself to map every floor I will go in from now on, it is quite hard as a solo adventurer, but a good habit to have for the future.)"
So who said to map everything? Bell on the first level
However, more important things take priority... Such as the inventory, which I have been reported might be too small, so I'll be making a bigger one once Lili joins you.
Since the secrets and puzzles added on R14 add more items to the game, a bigger inventory is something far more important atm (alongside bug fixes).
Having Lili carry her own bag would work and is lore friendly. She lost hers and got a new one in the anime so shops should let her expand her capacity and it could be seen as Bell taking her shopping for a nice gift. She does say the one she got in the dungeon was smaller and more expensive then her old one too.
A controller in the dungeon would be nice but
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has a dirty fix.
Stick1 <- A
Stick1 -> D
Stick1 /\ W
Stick1 \/ S
Button 5 Q
Button 6 E
Too bad the combat is mouse focused otherwise Button 1 for the win would work.