Wow, Towa no Uta is cool! And, I liked Romance wo Katatte also

Both of the songs definitely are graduation-esque songs imo.
I have no idea what the lyrics mean for Towa no Uta, but the sound of the song itself gave me a "we're graduating" "it's graduation" vibe. Like, the music sounds like something i'd hear in some anime/j-drama when people are celebrating the end of the school year or something along the lines in a really happy, cool way.
Romance wo Kattate definitely has that winter/Christmas feel to it. While I noticed that most winter/Christmas songs in Japanese tend to be sad/sappy, this one sounded quite cheery and cute, and I really find the chorus and the prechorus/bridge (is that what it's called?) part of the song catchy and nice. The verses are alright, it just sounded kinda off for me for some reason, but it's still ok. The song really sounds goodbye-ish, most likely will get you emotional, but not in a completely sad way.
Tbh, i'm not really the biggest BK fan, and I've only really liked mostly their old songs after entering the H!P fandom a year and a half ago, but I think this single is the one that I didn't really have to grow into the songs to actually like. I liked these songs from the first listen. While I don't think I completely LOVE these songs or anything, nor can I say that I will have them on replay every now and then, I can say that I already have Romance wo Katatte on replay, and I might do the same now for Towa no Uta.
Considering a lot of you BK fans found this single as a "flop", I'm hoping for their hiatus that that wouldn't be the case.