Danteuros

Well he'll probably become something like a dark angel or cthonian demigod (or something along those lines).

OK, this was waayy too much haaxx, Mahouka is a sci-fi/fantasy world that still follows law of conservation more or less. Even Tatsuya cannot come back from the dead (by beheading and disintegration) multiple times without expending something (let's call it soul power or mental strength) which is limited (even Gods aren't excluded from the rule they simply have greater reserves and regeneration) or else he wouldn't have a hard fight against JSDF when he broke from the military later in the LN.

Why do I see Masa seducing Maya in the future?

Not to mention Sephiroth graal (with it's principles of life) and Hito Hito no mi (from one piece world). With her enchantment powers she could probably analyze and copy Chopper's devil fruit without extracting/killing him.

Sorry 'Hidden dungeon in otome game'

'This is not highschool dxd dammit' and 'Hidden dungeon only I can enter' are two of the better ones. The latter being a slight mix of mobuseka and the novel with the same name. Others have been discontinued, axed or deleted as a whole.

Frankly I can see this going horribly wrong so fast that it's just sad. Let's be honest here SHIELD has created more problems for the world in their desperate bid to police and control supernatural events without giving the proper caution and respect they deserve. They are so desperate to maintain the status quo of the American constitution (that isn't even a millenia old) that they forget some of their enemies who are far older than it. SHIELD agents treat Dante as a 'kid' when he's pretty much the only one that had kept them afloat in desperate times forgetting that without him SHIELD would be history and Fury lynched by the government heads if they were caught unaware by the demon attacks. No Fury isn't angry because he's keeping secrets from him, nope, rather he's p**sed because he's used to double crossing his enemies and allies without fear of possible retribution and he can't do the same with Dante.

When an idealistic moron (Naruto) with a god and messiah complex meets a realistic cynical and unconventional genius (Satria) and the latter tries to give the former a healthy dose of reality check. Naruto punching Satria is basically an overpowered child throwing a tantrum when reality does not match up to his dreams. No wonder Artoria likes him neither of them got out of their childish dreams they immersed themselves in. Both of them are too strong and arrogant compared to their peers protecting people to the point of spoiling them. In a sense Naruto has the qualities of an excellent general while Satria has the qualities of a king.

Wow with 'allies' like these he might as well sell off this reality and skedaddle to anther one with Jean and (possibly) Rin.

Plot armor is pretty much the only thing keeping the mc alive from his sheer recklessness and stupidity. First he gives up the gamer system, then he saves Asia without a proper disguise, antagonises the spoilt devil princess (with the overprotective OP Satan siscon brother), recites the holy scripture in front of them (for what just to get a rise out of them) all the while showcasing he's unaffiliated to any faction (despite being fairly strong). Being unaffiliated means unprotected and up for grabs in dxd supernatural world. Means no one will raise an eyebrow if Sirzechs just walks in to his house with his attack dog maid and gives him an ultimatum to either join his sister's peerage or die.