Reincarnated being weak and useless but MC doesnot realize his power

A bull headed monster with an axe coloured in gold giving the vibe of danger with a huge body and facing this is the hero clad in golden armour, silver white sword in hand giving the vibe of holiness. The huge axe of swung at the speed greater than sound towards the hero which he avoids by twisting his body to the right but ' pah..' " Ouch" I stand up and see a big fat person in front of me yelling" Tanaka, it's your fourth time sleeping in the class. Go to the principal office after the class. He will determine your punishment".

" But sensei, I wasn't sleeping" I tried to refute but he gave me the chalk and said" Then why don't you solve the problem in board, It should be easy if you weren't sleeping"

Well I was in the dream fighting the minotaur, so obviously I couldn't solve the problem. 'Hahahaha..' I could hear all the students laughing and "Oye doofus, you can't even solve it, even my little brother can do it blindly", well being mocked. Of course, he is the bully of the class, Rihito Musaba. I know that even he can't solve the problem and neither his little brother.

'Ring, ring, ring' The bell rang and I was ready to go to the principal office but I see a boy in front of me with huge body and messy hair with his shirt out from his pant, he looked more like that minotaur, stopped my way" Hey doofus, are you going for a lecture, while you are at it why don't you bring me juices, you can right?" and said so. "With your own money obviously, hahahahaha.." said his sidekick while laughing. Well from this you can find it that these guys don't just mock me but do more than just that.

Well, I wanted to refute but I don't want to get beaten up so I nodded and started going towards the door when all of a sudden, the building trembled and some weird designs started to form in the floor of the classroom. While we were unaware of what was happening, the designs started to glow and blinded our eyes.

"Ouch, my head hurts and I can't feel my lower part of my leg" I opened my eyes to see trees all around me and a slimy looking ball in my feet trying to eat my leg.

What the fuc.....