Here is a list of the stories I made Relationship Diagrams for, along with the links to those diagrams (view the notes for each by clicking "more" under them). I typically make diagrams for stories with complicated family trees and interpersonal relationships. This helps remind me of who a character is in stories with slow release schedules, a large casts of characters, and/or similar names.... more>>

*WARNING* - These diagrams are updated to the latest chapter that I have read. That means that they will likely include some spoilers if you are not on the same chapter as I am. I typically do not update completed stories after their climax, so as not to ruin the ending.

Some of the diagrams are not up to date to the latest releases, as I have fallen behind in reading those stories. If you see any errors please let me know in the comments to this list. <<less

Don't expect many harems with characters who can't think for themselves or fall in love with the MC before page 1. Many might have a slow moving plot... have to invest yourself into the characters to find the tragic, beautiful and poignant!... more>>

First, some English original webnovels that are superb and easily googleable (in order of best characters, not necessarily plot): 
1. Trailer tr*sh
2. Iron Teeth
3. Castle Kingside (rewrite)
4. Metaworld Chronicles
5. The Good Student
6. Worm (Parahumans)
7. AnimeCon Harem (18+)
8. Mother of Learning
9. Selena's Reign
10. Double Blind: A modern litRPG
11. Tidal Lock (unfinished)

Note that I've been recently pruning and updating the list to remove some that were just good stories with average characters and move them over to new lists that are top of their genre. You can see all my rec lists at https://www.novelupdates.com/user/10378/tallrice/ <<less