Thanks for the chapter!
If the gem only returns all party members to the entrance why were Beel and Larsen transported too? They entered separately as their own parties so should've remained behind, or does the gem send everybody still alive out before collapsing the dungeon regardless of party affiliation? Seems like MC has a lot of lustful dreams but little experience dealing with or understanding women. Since Larsen seems to be that interested in him will probably move in at some point after more flags have been raised over the next 30-40 chapters but just guessing here. Speaking of flags, wonder when the ultimate doom one MC raised will occur or does he need to raise more doom flags first? From info so far, his little sister seems to be a yandere who is either a bro-con and/or sadist who's either obsessed and/or very strict with MC. Furthermore, considering just the thought of her gives him the shakes and he doesn't seem the type to hold back much when fighting women she's probably at least a rank or two higher than him in skills and abilities. If she was weaker or only slightly stronger than him he wouldn't be so overwhelmingly scared of her. In any case, she probably won't show up for at least 100 chapters or more so will have to wait awhile to find out her true abilities and temperament.