Given what I played so far in the game, you take Corruption far too literally here. With the exception of maybe a handful scenes even the "corruption" paths are hardly corruption at all. On several corruption paths you can still be a nice, helpful guy and even turn them into full romance ones.
If you want to see hard corruption, try the game in my sig, "Pale Carnations". You can play a good person in that game (and it is rewarding doing so), but corruption (or fighting it) of yourself and others is a central theme. To quote even a good MC: "No one in this building is at risk of sainthood."
That is quite different in DoD here.
I see corruption as influencing and changing the mind of someone who normally wouldn't want to be with the MC and/or making them more open to activities they normally wouldn't do or have been resisting. The same goes for the MC being corrupted. He'll be more lust-driven and more easily persuaded to make bad or immoral choices to empty his balls.
In most AVN this plays out as the MC chasing inappropriate relationships (teacher/student or incest) or regarding sexual liberation (threesomes, anal, urination ...)
I'm not strictly opposed to some kinds of corruption, but the narrative has to carry it. What worries me about Dilemma of Devotion is that the MC is still so hung up on Kiara that he hallucinates about her. When the prologue ended, I didn't see a call to action to start chasing every skirt possible. I couldn't imagine that this person would allow others to get closer, the taboo LI even less. I may be lacking imagination, but the only kind of LI I see working for the MC in the state he's in is the one who slips under the radar and slowly disarms him. Who gently increases intimacy and makes the MC dream about her instead of Kiara. Slowly. A bit of push and pull, a little gentle teasing here and there. Certainly not a stranger wanting to start a fake relationship so she can lie to her father.
Speaking of the shop/gas station lady... I think her choice needs to be clarified or better translated. At a certain point she asks the MC if they can take more pictures. When I refused, she asked for a selfie, to which the MC agreed. A selfie is a picture, so I'm not certain what she had in mind when she asked the original question. I don't remember her saying anything about potentially going out and taking pictures in other locations, but that might've been implied.
Another situation in the intro, with the drugged girl and the MC's glasses, felt forced. This guy can't overpower a girl? I understand her taking the MC by surprise the first time, but the 2nd time he could've easily resisted if he wanted to. I rolled back on that choice and let the glasses be.
Him wearing the glasses also surprised me. He's not a fan of them when he puts them on, and we get a choice to wear them for a picture or not. I decided not to because the MC indicated they were fake and wasn't a fan. Then, at school, he puts them on anyway, which felt like the game didn't respect my decision.
On a practical level, I'm aware that the dev can't possibly make twice the amount of renders based on the choice of glasses, but then it would've been better if the MC had liked them from the start. If I had realized he would wear them anyway, I would've worn them for the selfie as well.
The game in your sig offers a very interesting choice system. It's more or less possible to play it celibately (at least when I played it last), and doing so makes the girls arguably worse off. The choice this playstyle confronts you with is interesting to me. Where do you draw the line between people being responsible for their own actions and being compassionate? Do you allow yourself to be corrupted to spare or help others? If you do, what's your breaking point? Do you revel in this newfound power and authority, and how far do you take it? When does your own lust overpower the duty of care you felt before? Combine this with the rich lady who actively seeks this treatment out, and you have a powder keg of conflicting emotions and motivations. And that's the kind of story I love. Or, you can just play it for the porn and collect all the lewds; that's fine too.
Dilemma of Devotion is still on my list to play. I've been putting it off because I want to make sure I'm fully awake to give it another and fair chance. From speaking with Shikharisfree, it seems I'll need to be a bit more patient with it before the main narrative really kicks off. I'll prioritize the events with the heart-LI + therapist and see where that takes it.