Manga With Creepy families

The characters in these manga's encounter or belong to a creepy family that has a very dark secret. Feel free to give me suggestions!

13 people

1		Adabana (NON)
2		A Happy Summer Vacation
3		A Happy Winter Vacation
4		Ai to Noroi
5		An Easy Target
6		An Uncomfortable Truth
7		Arachnid
8		Ayatsuri Yashiki
9		Ayeshah's Secret
10		Banana Fish
11		Bastard
12		Blood on the Tracks
13		Boy's Abyss
14		Coffin
15		Danzi
16		Deserter
17		Dissolving Classroom
18		Elfen Lied
19		Four-Layered Room
20		Fullmetal Alchemist
21		Future Diary
22		Get Schooled
23		Goodnight Punpun
24		Good Night World
25		Gosenzo-sama
26		Happy Sugar Life
27		Hide and Seek on the Sofa
28		Innocent
29		Innocent Rouge
30		Just Leave Me Be
31		Killing Stalking
32		Like Mother, Like Daughter
33		Magical Girl Site
34		Mantis Woman
35		Mieruko-chan
36		Migi to Dali
37		Otousan ga Hayaku Shinimasu you ni.
38		Pigpen
39		Pupa
40		Rumors (Junji ITO)
41		Satougashi no Dangan wa Uchinukenai
42		Shi ni Aruki
43		Soichi's Beloved Pet
44		Souichi's Birthday
45		Souichi's Happy Diary
46		Souichi's Home Visit
47		Souichi's Petty Curses
48		Starving Anonymous Re:Velation
49		Takopi’s Original Sin
50		Teacher of Cloth