Spoilers for all series mentioned below. You have been warned.

Extremely long and unimportant list ahead.

(Please note that all of the relationships mentioned below may not necessarily correspond to romantic relationships.)

Likes:

Higurashi - When They Cry (Higurashi no Naku Koro ni)

Keiichi/Rena

Mion/Shion

Satoshi/Shion

Jirou/Miyo

Irie/Miyo

Takano Hifumu/Miyo(ko)

Miyo/Hanyuu

Mamoru/Rika

Keiichi/Rika

Umineko no Naku Koro ni

Battler/Beatrice

Battler/Yasu

Battler/Shannon

Battler/Ange

Juuza/Ange

Willard/Lion

Lion/Yasu

Lion/Beatrice

Lion/Clair

Willard/Clair

Beatrice/Maria

Natsuhi/Lion

Natsuhi/Yasu

Rosa/Maria

Bernkastel/Lambdadelta