Hero used his holy steps with clones and used holy shield to become invisible and hero thought,"what am I going to do,is there a way to kill these ghouls. Let's recall the low ghouls battle. Ah! I have a plan".
Hero slowly move forward to ghoul and use lucky looter to take soul and middle ghoul is defeated so hero cleared that floor by lucky looter and enter 16th floor of riddles are who can summon spirits and beasts temporary and who can cast to be no negative effect.
Hero answered caller and tiptop and the door is opened with a room full of high ghouls but fortunately hero's level 4 lucky looter is required to kill all the high ghouls so he can't use it in boss room and the 18th floor of riddles are who can see the structural compound and weakness and who can control space of earth .
Hero said,"scholar and porter" and next door opened. The sound said,"the time limit of 30 minutes is to rest and challenge is about swapers study and if you fail,you will have to face the boss in one on one so be ready to eliminate.
After 30 minutes, hero entered 19th floor to face boss and the boss is grim reaper of wisdom and the riddle is start which one of the basic formula is used to create maths?
Hero answered,"E=MC^2" and the next riddle is what is the name of the structure of CH3-CO-CH3.
Hero said,"that is acetone in swapers study" and next riddle is who is the one to found the laws of motion and named in the SI unit of force.
Hero answered,"Newton and he is the one to found gravitational force" and the next riddle is ,are you a hero?
Hero said,"yes I'm the hero who is chosen to kill demon king" and next riddle is which is the strongest class of skull in this world.
Hero said,"catastrophe type of skill" grim reaper said,"who the hell are you and how do you know this and how many information do you have?
Hero asked Narrate,"what am I supposed to do, please tell me" but Narrate didn't answer about hero's call so hero though silent voice is approval so he tell about swapers study beyond grim reaper's knowledge and some catastrophic achievement so grim reaper said,"I thought about question that are impossible to answer but you have wisdom than I have so I'm willing to be your follower and in exchange you give copy of your knowledge".
Hero said,"no problem and it's a good deal who want to refuse it".
Grim reaper used his wisdom seeker to see hero's wisdom but he found out hero's memories and came to know that hero is not human of this world and presence of goddess so grim reaper satisfied his need of knowledge for now and the treasure room is open but it's hidden treasure room(which have legendary weapons and equipments than normal treasure room).
Hero thought,"if I were not a hero now,I would have become rich of this world but I have to do my duty so let's see what I have got".
Hero found infinite storage ring, killer's wrath dagger, alchemist finest staff, recovery chest plate, enchanter's great gloves, real holy sword and painkiller bracelet and hero stored all the d coins and equipments in the room and a hologram appeared with a trace of human and that hologram said,"I am hero of the another world but not this world".