I'm not sure of the specific details of their love story. They might be two individuals known in a particular context, perhaps in a local community or in a certain entertainment circle. Maybe they met through common friends or at a work - related event and gradually developed feelings for each other.
Since there's not much known about their love story, it's hard to say the key events. But generally in a relationship, the first time they said 'I love you' could be a key moment. Also, if they had to overcome some misunderstanding or obstacle in their relationship, that would be a significant event in their love story.
Well, it could be that Mika Dela Cruz and Nash Aguas first got to know each other through mutual friends in showbiz. As they spent more time together, they might have discovered common interests. Their love story could be filled with sweet moments like going on dates to nice restaurants or enjoying walks on the beach. However, without more information, it's all just speculation.
I'm not entirely sure, but it's very likely. TvTropes is a comprehensive database for all kinds of fictional works. Given Konosuba's popularity, especially in the anime and light novel world, it would make sense for there to be a section about its visual novel on TvTropes. You could check by searching for 'Konosuba visual novel' on the TvTropes website.