Actually, Kaguya worried more about the fact that now Cirno will be tagging along to Nitori's place. She'll have to take care not just one, but two ⑨s...
Eh... W-...who are you?When I thought they were picking a fight, they got along so well...funodThey have no mercy... But I'm the strongest.... she's tagging along...?NooI...I was actually feeling the same for a bit now...yayI see...R...really?But only I'm the strongest!wahahaOh dear...Yes......yesIn other words, we have to find out who's the strongest.gashiwaitI understand. I'll help you look for your lost tape.UnexpectedYeah, Sadako, you don't feel like a stranger....Did she just say...uru⑨ added.You got beaten up by Reimu and the bunch, and on top of that you lost your tape...Hey you, I'm gonna battle you with the title of "truly the strongest" on the line.A Friend Gained Through A common Interest