This man is just plain stupid. He had no reason to lie about talking to Koto-chan to his daughter. (and the origins of that band-aid)
The guy just should've told from the start how he met the girl, how she works at that cafe, and how she has been a mental support to him, etc. and how she has been giving hints regarding Miya's situation..
This is just stupid and forced drama writing, by exaggerating meaningless things by needless secrecy.. 👎🏻