There! Took me a while but I finally got every single dialogue event unlocked.
Here's the complete save. All the CG and scenes are playable from the Alice Mansion gallery, but in case you wanna mess around with end-game saves, here's a little guide :
Slot 01 : Normal Mode (Harem Ending)
Slot 05 : Easy Mode (Virgin Route / Elina Ending)
Slot 06 : Easy Mode (Non-Virgin / Normal Endings Available)
Slot 13 : Hard Mode (All 30 Gal Monsters including New Game+ ones)
Slot 22 : Normal Mode 100% Completion (Omake Dungeon Clear with Legendary Armor + Fail Remover)
Also to answer some previous questions: Every time you explore 100% of a map, Kira makes a Rare Stone and a Miracle Drug appear on the map. You can easily bring a Gal Monster with the Scouting ability in your party, take a screenshot of the minimap, complete the map to make Kira appear, then compare the green spots before and after his appearance.