Toaru Kagaku to Majutsu no Accelerator

The real Accelerator got replaced by certain healthy male from the real world.. (by the power of Author)
With the appearance and power of The Strongest Esper in the Academy City before nerfed, what will (fake) Accelerator do?..

Accelerator:"Yo Aleister-kun!, i've come to bargain"
Awaki:"....."
Aleister:"....."

Author Notes & (SPOILER)
-THIS IS FANFICTION! I OWN NOTHING!
-my english suck so please bear with me :"D
-if u looking a story with amazing detailed explanations about how science and magic works, this is not for u. Im to dumb to make my own theories about that and just want to make it simple or vague...
-OP MC FROM START, lazy and not genius like the original
-Author still noob at describings...
-HAREM, Wish Fullfilment of author, (SI?), AU
-If u looking ruthless MC this fic not for u, MC soft againts women but ruthless againts men(call him sexist if u want)
-Following Canon of Anime Index and Railgun with few modifications to my liking
-no dead Frenda, less tragic than original, no choker Accelerator, no brain damaged Touma
-RELEASE RATE IS RANDOM
-MC will become Touma sidekick because MC is too broken and it will be boring if he oneshot everything plus MC respect our misfortune Protagonist
-MC will not stealing all Touma harem