This manga was based on light novel

i remember it was still in raw and not translated but somehow i read the summary via translation machine

I think it was listed on baka update, i lost my bookmark sadly on that manga(i read the raw and see the story based on the picture , i can't read the raw haha and using translation machine tired me out)

The story , the first page manga was when the boy brave himself going to the dark dungeon all alone, he bring a torch with him.

The boy(around 15 years old) was a fallen poor noble, he was ranked below and live like commoner, he have beautiful little sister that seems a bit tsundere and i think the little sister was adopted or somewhat got a job because she keep lecturing his big brother about what he gonna do with his life now.

The boy have childhoodfriend who it seems a noble ?? she was an adventurer too and her rank was higher than our mc, and the girl try to cheer him up. Basically the boy parents bring the boy to some place and it revealed he have high affinity for magic and can be adventurer.

So the boy decided to become adventurer to help his parents, but sadly he was a newbie and there's a rule that a high rank adventurer can't babysit the newbie so his childhood friend tell him to do his best and run when things go south.

Sadly the boy was the only one newbie in town and so he brave himself and gulping , going to the dungeon all alone. There somewhat , the dungeon structure got messed up by some warp dimension thing and the boy got transfered to a weird room.

In that room, the boy meet a shackled woman(both her hand got shackled in chain in the wall) , the woman explained she go to the dungeon to do something and got a trap or what and she got sealed. I don't know what really happened i think the woman try to trick the boy but he did'nt got tricked ??

then in the end she explained she was actually very strong maybe a goddess and teach the boy the most easy quick shortcut power up for him to become OP. i think the boy absorb a little bit of the woman power and they make a deal i think , maybe the woman will get released if the boy was strong to destroy the dungeon that shackle her.

After that the boy become strong, he quickly gain 25 lvl in just 2 days and at chapter 3 i think he managed to defeat a boss who was lvl 70 alone.

oh btw, the boy can get out from the dungeon and meet his family/childhood friend, he somewhat can enter the secret dungeon room freely that have the shackled woman that teach him how to lvl up fast.

i want to re-read this manga using machine translation seeing i have free time now

thanks guys 😀

IDK about the manga, but is this one the novel?

https://www.novelupdates.com/series/the-hidden-dungeon-only-i-can-enter/

oh yeah that

thanks