The Stand-In Is Kusuo A-Doraemon

When Aoi Saiki was five, she still couldn't speak. Her family took her to see doctor after doctor, but none of them could find the cause. Until they met a certain psychologist... "Is anyone at home very talkative?" "Yes, my mom and dad are always talking nonstop." "There you go. Your mom and dad have said all the words, so she feels like she has nothing left to say." "..." Aoi: I can talk to my big brother telepathically! I knew it! I must be a psychic! Kusuo: ...