If you enter when Yuna is absent (check the kitchen first) and Hana is in the bathroom (indicated by the shower sound effect), you can examine the top drawer of the nightstand. You’ll find a diary.
: Order rat poison via your phone. You must also have the knife , which can be found on the knife rack in the kitchen. girl house walkthrough guide version 152
It seems you're referencing a specific version of a walkthrough for a game or interactive story titled (or something similar). However, I don't have access to version 152 of any particular guide in my training data. If you enter when Yuna is absent (check
Girl House Walkthrough Guide: Version 1.5.2 Complete Strategy girl house walkthrough guide version 152