What starts as a simple vacation turns into something deadly once he arrives back home how will issei deal with not only the new influx of lovers but enemy's as well well find out in issei vacation
Disclaimer I don't know highschool dxd neon white...
issei after getting back from hit trip set up a room for red and white with his mom going back to her own room Trihexa then claims him for the night becoming his thirteenth wife
Time skip next day
Ophis : darling where are you going
Trihexa : yea I want more time with you
Issei: sorry girl but I need to go out
Grayfia : hope not to pick more girls
Issei gives her a face of really just really
Issei: no I need to get some parts
Mura : parts for what
Issei: a secret project I'm working on I've set up some equipment in one of the rooms so my days gonna be taken by that and cause I have school tomorrow I won't have as much time as I need if I don't do it today
Ophis : alright be quick darling
Issei kisses his wives and goes out to buy parts
Issei walks goes to various places buying some steel gun parts sword parts bullets and other smithing equipment thinking of making a duel bladed scythe that could change into a pair of guns he also buys a chainsaw to infuse with magic to making cutting the steel easier
Issei then uses a magic circle to teleport into a room he set up he then got started sparks falling everywhere hammers banging and noise flooding the room
Yusaka : what the hell is going on
Ophis : issei working on a project
Kunou : I'm gonna kill him for making that much noise
Time skip
During the process of issei working on his project Gabriel came over waiting for her dinner date with issei a little while after issei comes out of his room walking into the living room
Issei : ah Gabriel good to see you
Gabriel: hi issei what holding
Issei with a smirk : my new project
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Issei then grabs the middle part of it spectates it then it transforms into a pair of duel guns
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Kuroka : ohhhh what do you call them
Issei : the thermal ultra scythe and the combat overlords
White : issei my man I didn't you had such a good taste in weapons
Red : can you make me one
Issei: sure at some point
Koneko : I want one to
Raynare : can I get one
Issei: alright I'll make everyone a weapon at some point shall we good now Gabriel
Gabriel: let's go
Issei: back in a few everyone
Koneko : bye honey
The 2 good out for a night on the town first hitting a night club spending some there then going out for some food before watching a late night movie after that grabbing some beer finding a cliff and watch the sunrise together and issei gifts her a present
Issei: here this for you
Gabriel: thank you issei
Issei puts a necklace around Gabriel's neck tho it a little some special to it
Issei : you won't fall now
Gabriel : that's amazing but how
Issei : i borrowed a tiny scape of the book of life from whites card deck the card it self repaired itself cause it's linked to your soul so i took a part of it and crafted the power of it into the neckless so you don't have to worry about falling
Gabriel tears up : thank you issei
Issei : glad I could be of use ha ha
Gabriel : shut up and kiss me
The two stay there for a while before then going back issei marking Gabriel as his