I wonder if there are manga that similar to Katakoi Triangle. It's a love triangle but doesn't really has love rivalry and drama. It's funny and light read. More comedy than romance. More than triangle is welcome

Gaccha Gacha, Beauty is the Beast, and (ambiguously) Heaven!!. I'm a fan of those comedic/pathetic love triangles where one of the guys doesn't have a chance in hell (and knows it too). Eventually they'll become the manga's emotional sandbag and divert most of the angst the author decides to add away from the main couple. I absolutely hate love triangles where the 2nd guy is just an improved version of the 1st whose only purpose is as a plot device for causing jealousy. But yeah, these three were really good.