Okay so I saw your picture and what it was titled. I knew that the story would be sad, but I still looked up the story. I looked it up and almost started crying. Haven't seen the anime, but I read the story. My heart breaks for these two and they are not even real. Your drawing is beautiful and thank you for turning me onto this. Maybe I'll get around to watching the anime. Thank you.
Sorry for taking so long to answer this! I usually use the acrylic brush and the crayon one in Paint Tool SAI. If you'd like a visual of my settings, just let me know!