Make Akeno loves him

"Touch, look like i has no other choices than dealing with Akeno-san's problem like with Kiba"

"Wise choice. If i'm true, she will be very suitable for your sadist side"

"I'm a sadist only for those i hate"

Using Reality Stone, Issei creates a situation that Rias and everyone knows about his power-uncontrolling but she's too busy with her brother to prepare for the meeting and Asia is still shock about God's **** so Akeno will take care of Issei.

As she is before his eyes, Issei uses Mind Stone on her.

"After the healing is over, you will show Issei your fallen angel wings and express your feeling about fallen angel to him. If he makes you feel good, you will fall in love with him, otherwise, acting like you will do"

This is a bet Issei makes for himself. Either he can make Akeno fall to him or make she hate him.

After the healing, Akeno shows Issei her biggest secret with a sorrow face.

"Half of my blood ... is the same of those ruined Asia-chan's life ... and kill Yuuto's friends ... i'm not ... different from them ..."

"You are different from them. President chose you is the proof. I don't care if you are a pure or half-blood fallen angel, you are our Akeno-san, and we are Gremory Clan for eternity"

Issei can see Akeno cried after hearing what he says and suddenly, she pushes him down.

"Akeno-san ..."

"Issei, you are too kind. Although Rias told me about this many times, this is the first time i want to cry. Issei, i think i love you"

More successful than expected. But Issei is going to add Akeno into his harem now. Not before he resolves with White Dragon Emperor.

"Akeno-san, this is ... too ... surprise ... you know ... i ..."

"Don't be too worry. Just make it a secret from the others"

Akeno whispered in Issei's ear after giving him a deep kiss, then leaving.

"See, the female fallen angels is naturally attractive no matter they are slut or maiden"

Draigg says proudly as his idea succeeds.