What Festival?

We head to Lulu's house with the apology cake, After some walking we arrived at Lulu's house. We knocked on the door but she's not home, " what should we do?, does she doesn't what to see me, or does she hate me?, Marco!", She panicking, " don't worry, we just have to find her", If I were Lulu, Where should I go?, an idea came in to my mind, " she's probably at the arena, she likes to practice right?", Ains nod and then we head to the stadium, " She's right there!, look!", I look at Ains but she's gone, she's already in front of Lulu. " let's go, let them talk", Haru said to me, we walked outside and, " Marco, Momo said that she want to see you", so you two are talking huh?, " let's stop by the cafe before we head home". " Welcome home, Master!", totally a maid cafe, totally a maid cafe!, this words are always repeating in my head, when I hear those words. " Marco!", And out of nowhere, Momo appeared and gave me a hug, I feel happy for some reason, " What a lovely couple we have here", I felt a demonic power, behind me, " Haru!, do you have a work today?", Momo said to her, She said that you wanted to talk to me, then she asked " Are you free next Saturday?", What's up with Saturday?, A battle?, or maybe a sparing in the stadium, " do you want to join us on the festival?". Festival?.