First off, welcome!
Second, I have read all three parts of Parallel Love in English. They have it to download online here: http://royai.livejournal.com/447173.html
All you need to do is message the person and ask them to send it to you. If they give you their permission (which they should) you can download and enjoy
It's a great, adorable read
It's worth your time! I would send it to you, but unfortunately, I'm not allowed to because this person doesn't want it spreading around the internet without their permission first. Which is understandable.
Unfortunately, I'm not familiar with the other one you're talking about :/ Sorry.
But I hope this helped! Let me know if it works out!