A blessing.

Tanjiro enters the room to see his mother bending over to cook some food. The sight of Nezuko and now his own mother's curvy figure. He can no longer take it. His mother seems highly occupied so Tanjiro is willing to take a risk.

He pulls out his cock and starts to masturbate stealthily hoping his mother doesn't turn around. Unfortunately for Tanjiro, his mom wasn't as occupied as he thought as she turned around to see him masturbating to her.

Neither Tanjiro nor his mother says anything for about a minute. Then his mother suddenly says, "Tanjiro would you mind getting me some more charcoal?", as she nonchalantly walks past him with his cock still in his hand.

Tanjiro quickly rushes out to get charcoal, with thoughts flooding his mind, "I ruined my relationship with beloved family, my mom is going to think I'm a pervert, and what if she tells Nezuko-chan?".

Sometime after Tanjiro collected the coal, his mother finished their meals and they all eat together. Tanjiro wasn't like his usual self and was quite quiet throughout still thinking about the incident earlier today. As his sisters headed off to sleep, and him doing the same. His mom whispered to him to meet her in her room when his sisters are already asleep.