This is one of the cutest doujinshi ever. It mainly focuses on Tyler and Victor (mainly Tyler dealing with his sister's illness and meeting Victor for the first time) and isn't completed yet. This one isn't hardcore like the last one and just beautifully done-
http://illnessoftheheart.smackjeeves.com/comics/830646/illness-of-the-heart-chapter-one-caduceus/

There are a bit more pages on their DA account. It includes the rest of chapter two and part of chapter three as well as other lovely pics of them.

Check it out.

Some of the covers and scenes-
http://illnessoftheheart.smackjeeves.com/comics/830671/illness-of-the-heart-chapter-two-guilt/