俺の妹がこんなに可愛いわけがない(2010)

sibling relationship

based on novel or book

lolita

forbidden love

hobby

romcom

fan culture

slice of life

incest overtones

incest

teen comedy

older brother younger sister

ecchi

anime

hobbies

otaku

tsundere

based on light novel

otaku culture

romantic

teen romance

blue hair

younger sister

brother sister incest

accidental incest

romcom anime

gothic lolita