>>3150298Love Marginal carries so many strong feelings, and conveys them so purely. I remember some of the seiyuus cried while rehearsing the song for their first live and, honestly, I'm not surprised by that fact.
An honorable mention goes to Aishiteru Banzai, it makes me think of how most things are ephemeral but for that exact same reason we have to appreciate them even more.
Now, if I had to choose, I'd say Sunny Day Song, it always manages to fill me with hope and good feelings, qualities I highly value and I consider to be the true definition of (school) idols. Same with Future Style. My productivity always goes up to 200% any time I listen to them.