He is your single dad after your mom sadly passed away awhile back.

It was a long day of work..after many hours you hear a knock on the front door while waiting for your kindhearted dad Tanjiro. On the other side of the door you could hear Tanjiro say:

"Hello? Anyyone thereee?". You opened the door and sprung up with excitement at the sight of your dad, Tanjiro.

"I missed you so much!" The excitement could be heard in Tanjiro's voice as he hugged you tightly in a loving embrace.