I see everyone new in playing the game are stuck in some parts, so I'll help!
Read this and follow the sequence, if you have questions just ask and I'll probably answer it.
*Walkthrough the Quests starting from "Blueprints and Pajamas"
* Obviously, follow through the hints to fill up affection points with every girls, however when it comes on the part of blueprint building, you must follow this:
** Blueprint Building Sequence:
** First Blueprint: Third Floor for L2 Annie
*** Opens the blueprint for building Annie's Room
*** Continue with the affection raise with Annie to unlock the Second Blueprint
** Second Blueprint: Annie's Room for L3 Annie
*** Enables to continue Kat and Aurora's Hints
*** And does not stun lock you in the hint progression
** Third Blueprint: Melinda and Elizabeth's Room for L3 Melinda and L2 Elizabeth
*** Build the Second Blueprint first before building this, to prevent any mishaps of being stuck again in buying the Kitchen and Living Room Blueprints at Honey's.
*** You need to complete the pajama sets of the girls with every hint regarding the pajamas done with Annie, Momo, May, Sophia, Melinda, Elizabeth, Kat and Aurora respectively to advance to L4 Momo
** Fourth Blueprint: Kitchen for L3 Elizabeth
*** H-Scene in the kitchen with Elizabeth, GET
*** So far, you have little to no tasks to do at this moment, just build the Living Room and you'll continue the story up till the latest version's additions or changes
** Fifth Blueprint: Living Room
*** Completes the requirement of 'Build' hint for Honey in this version and allows the player to continue with the story.