Issei's Adventure in the Multiverse

Here i am just chillin in my room. Playing some games, watching some anime, and read some fanfics.

Then suddenly my mom calls for dinner. I leave my room and make my way to the kitchen when i suddenly slipped on the stairs and fell head first to the floor.

The last thing that i saw was my mother's crying face and then i lose my consciousness.

When i open my eyes, i found myself in a room. But it's not a hospital room. And it's not my room either. I observed my surroundings and i see some lewd poster. And when my eyes land on the mirror, i was shocked.

What i see was not my reflection, but a reflection of a boy with brown eyes and a short brown spiky hair. I know right away who that is.

How can i not?

It was none other than the self proclaim 'HAREM KING',

Hyoudou Issei!

I was brought out of my shock when a voice sounded in my head.

[Ding!]

[System Binding ....16%...48%...83%..100%. Done]

[Welcome Host! I'm a sign-in System that was binded to you!]

I was really confused. Who? and why me? But before i could ask, the voice spoke again.

[Host can calm down because the one that binded me to you was none other than the creator itself. He was bored so he kills you and reincarnate you and giving me to you.]

Hearing the explanation i was kinda pissed because, what kind of person that kills someone just because he was bored and reincarnate him just to entertain him???. Well even if i want to complain, he was the creator.

*Sigh*

I shrugged it off and ask "So, can you explain what can you do?"

[Ding!]

[My functions are exactly what my name implied, You just have to sign-in everyday and get a rewards like, Abilities, Bloodlines, Items, Skills, Talents, etc. And you can do quest to get more rewards.]

I'm surprised, that means i can get stronger everyday just by sign-in.. Isn't that too overpowered?, well not like i complain.

"Is that so, then can i sign-in now?" i ask.

[Ding!]

[Yes you can, do you want to sign-in now?]

[Y/N]

I was about to say yes, when suddenly i hear someone calls me. "Issei if you don't wake up, you're going to be late for school!". I almost forgot about that.

The one that call me is probably Issei's mom, well my mom now. Hyoudou Miki.

I quickly change my clothes to my school uniform and going down to eat breakfast and going to school.

On the way to school, i decided to sign-in. "System sign-in now!" then a blue screen appears in front of me.

[Ding!]

[You have sign-in for today!]

[Congratulations! You acquired 'Total Mimicry'!]

[Do you want the description for it?]

"Yes"

[Total Mimicry:] an ability that enable you to mimic and replicate absolutely anything and everything that others are, can do or have access to. This includes their skills, powers, talents, attributes, intuitions, conditions/status, experience, knowledge, memories, augmentations/enhancements, transformations, actions, weaponry/objects, and more, without necessarily transforming into them or changing their overall appearance. (everything copied will be enhanced 10 times)

(A/N: From Issei The Perfect Being)

I was stopped in my place and looking at the description with shocked expression.

'Oi! oi! system-san, isn't this ability too broken? with this ability, i can even make a novel or manga with any power that i want then use this ability to copy them. Is there an error?' i said in my head.

[Ding!]

[No Host! The rewards that you get is based on your luck. So getting this ability showed that you have an extremely high luck host!]

Hearing that, i was surprised by my luck. But i quickly shrugged it away and continue to walk to school.

I walk for a few minutes and arrived at the school gate. i enter it and make my way to the class. I saw Matsuda and Motohama is talking with each other so i greet them. The class begin and the two of them continuing their 'Activity' while i just ignore it and focus on the teacher's lecture.

Because of that i gain a shocked gaze from the girls...