James

It's not a love triangle. Every time Dan Da Dan introduces another character that would create a love triangle or (ugh) a 'harem' in another manga / anime, in this story it's actually used to help Momo and Okarun become even closer and understand their feelings for each other better. It's always resolved quite quickly, too. It never drags out for several chapters / episodes. It's a quite clever subversion of tired tropes.

It's still a slow burn romance in some ways, but Momo + Ken is the story.