Why did he accept that job?
Goku was starving and whine, saying that the wage would keep him alive for another couple of days. Goku was always starving. That wasn't a reason good enough to stay here.
"The school teacher's damn hot!" barked Gojyo.
"These children need our help Sanzo" argued Hakkai.

He remembered now why he accepted to baby sit these damn kids: to make his three "companions" shut up.
Now he was there with that stupid monkey gripped to his arm. Did Goku ever mention a brother?
He seemed to be the only one who would like to complain about the situation:
Goku was playing with a bunch of rude kids just like him, Hakkai seemed to know a thousand enjoyable stories and Gojyo was just trying to impress the teacher.
"These children are so cute" he even heard him say.
"Children", "cute". He didn't even know those words before he met Miss Hottie! Those were just annoying little bugs.
"Sanzo-san! Sanzo-san! Let's play Sanzo-san!"
Three! There were now three nasty bugs gripped to his arm.
"Thank you Sanzo-san, without your help I couldn't have taken the children to this beautiful place. I couldn't take care of them all myself. You're such a kind man."
Sanzo saw Gojyo laughing silently at him behind the teacher's back.
"There's not a man as kind as Sanzo the monk" he even dared to add.

I'll kill you.

The whole day went by like this. It seemed an eternity for Genjyo Sanzo.

Time to pay now Sha Gojyo.

He hefted his gun and walked straight towards the traitor.
"You'll seriously die, you kappa!"
But it wasn't Gojyo's head in front of his gun but Hakkai's that suddenly popped up.
"I forgot about this, sorry" he said, handing a piece of paper to Sanzo.
"What the hell is this?"
"Sakura-chan, the blond little girl made this piece of art for you but she was to shy to offer it herself."
Sanzo looked at the drawing. There was a blond little girl holding the hand of a tall blond… Him.

He put his gun back in its sheathe and sighed.

Kids were really annoying little bugs.