Okay, this might be kind of long, but bear with me here...
Look, I know I have issues. I know I overthink things. It's a problem, to the point that my fiancee disclosed to me the other day that me being like this has caused her to slip in her faith. I don't know why I'm like this, and to be honest I don't like it. Perhaps it's because when I was first saved (and subsequently started reading the Bible) I found myself confronted with a lot of conviction--I knew I had to give up pornography, pre-marital sex, perversion, etc.--and those changes started to feel good. I could definitely feel God working in my life, and I guess I was on a spiritual high. Perhaps I wasn't prepared for when the changes stopped, or perhaps I just read too many Christian blogs/posts/etc. that made me start over analyzing things (one example is a post that stated spending too much time talking to another co-worker was stealing, because you are stealing time from your employer, which made me get really antsy about just standing around at my day job, since I have to account for my tasks and time worked each day).
To be honest, for some time after my salvation I continued using my manga reader and Baka Tsuki apps on my phone to read manga and light novels that were unavailable in English but were fan-translated with no issue of conscience, other than the occasional question of whether particular content was 'okay' for a Christian. I don't think it ever really struck me as stealing. Whether it is or not, I don't know, and whether it's truly a sin or I'm just making it to be in my mind, I don't know. I get the feeling that most of you guys wouldn't sweat something like this, especially with my proposed idea of officially buying the Japanese book and then using the fan-translation as a means to understand what I own (I know Aletheus wouldn't, at least).
Even my fiancee feels I'm being ridiculous on this--I believe her opinion was that if anyone was doing something illegal it would be the people translating it, and if it was illegal it would be taken down. I believe it does technically violate international copyright laws, but I think part of the lack of action is that Japanese companies know they aren't losing anything by allowing it to continue, so they just take an attitude of indifference. The manga market is a bit different--I know there was previously a push against manga scanlators, but I'm digressing from my point. The point is that, if I understood her point correctly, she feels that as long as it's up then I'm not doing anything wrong by utilizing what's there.
I even contacted my young adult's pastor about this previously, and she said that she didn't see any issue with it, though ultimately it was between me and God. I prayed about the issue, and I can't say I really felt any kind of response to the issue one way or the other. Quite frankly, my initial thought of it being sinful to read these scanlations could have been genuine conviction, or it could be the result of legalistic though, or perhaps it could simply be condemnation from the enemy. I don't know. What I do know is that I overthink everything, to the point that I would barely touch my fiancee for a while. I've caused a lot of emotional suffering for both myself and others because I overthink things. I have ultimately failed to rest in God's grace, instead trying to micro-manage every little activity and detail as to whether or not it's sinful.
It's gotten to the point that I don't even know what to confess during prayer time. I wrack my brain because, quite frankly, I believe I must have sinned at some point. The Bible says that anyone who says they are without sin is a liar, after all. Perhaps wanting to play a video game was idolatry? Maybe talking to my co-worker for five minutes was stealing time? Perhaps because I rounded my time off for a job (we do billing in 15 minute increments) I was lying? Most times my confessions end up being something like, "God if I did x please forgive me, and if I did y please forgive me", with the ultimate end of it being, "Please forgive me for all of my sins, and please expose them to me". This is really affecting my relationship with God and my relationship with other people. My over-thinking things is so bad that, not long after my salvation, I was thinking about cutting ties with my three closest friends because they aren't Christians. Do I need help? Yes. Is this the place to find it? Honestly, no. But you guys are, as far as I know, all Christians (or at least the majority of you are), and I'd rather seek Christian advice from other Christians.
EDIT: It should also be noted that I have (and I think I can say still somewhat) struggled with the idea of, "Are thoughts sins?" Such as, "Oh no, I thought a vulgar word; is that a sin just as if I had said it?" or "That was a sexual thought. Was that equivalent to sexual sin?" You get the idea.
TL;DR: I over think a lot of things. Seriously though, there are details in that essay above, so maybe at least skim it.
I'm sure there are some people that feel that way.