*Choice*
Investigate with Kirika
Investigate with Koko
...
"Anyways, thank you so much for choosing me!"
... I hate to break this to you Koko, but the only reason I chose you is because Kirika's route is literally locked until I finish parts of yours. This is literally my only choice, besides getting a 100% save and potentially getting spoiled to the story from that.
Damn route lock system!