Tbh , this one is more interesting than the main plot lol. Where Sumi is the main crush of Kazuya. It will be a wholesome story and not tiresome like the main one.
If Kazuya still act sweet like this , I'm sure he will be a great character. Not like the simp one in main plot. I really enjoyed this series and thx for the translation
It's funny people think better of Kazuya here even though he acted like in the main story. The only different is we didn't get to read his thoughts this time but Sumi's.
Also I hope this side story also gets released in the west.
So what i am guessing is this is what kazuya looks like from a outsiders perspective as in the main plot we can hear his thoughts but here we cant so its looks like he is more "cool headed" while he is losing it in his mind.