[ Well Rin isn't expecting Hakkai to sing with him, but it would've been fun. He appreciates that he manages to hum along and it does make their tedious work go a lot faster. Before he knows it, they are heaving the last rock.

Rin admires their work. The barrier looks strong enough to withstand the magma. They did an awesome job!]

Yeah? C'mon, don't tell me you're tired already.

[ The work does take a bit of Rin's energy as well, he sits on a rock away from their makeshift barrier. He wipes a bit of sweat off his chin as he looks up at the volcano.]

There's probably more things to do, especially while that thing is still active.