The only thing you haven't obviously cleared from that screenshot are
-Beat the game after collecting all fragments
-Get the plant in your base and grow it to stage 2
The thing you unlock isn't really another room, it's just an extras menu, so you may have it already without realizing it.
Okay let me try listing it up:
1-Scenario Events = Which I believed to be the 3 "Bad End" events where Hisumi got captured. -I've seen all of them, so I supposed it's CLEARED
2-Buy all Equipment -CLEARED
3-Register all [Bad States] -CLEARED > Reward: Add States on-the-go
4-Blow a minimum on 200 enemies (Kegs or Special Attack) -CLEARED
5-Get a minimum of 20000 score at Saki's Hypnotic Interrogation Event(One of the Scenario Event) -CLEARED
6-Rise the "Child" into the "Adult" -CLEARED (No really, we do know what this thing is about)
7-Watched TRUE end -CLEARED(??) <=This is confusing one. If it's not the ALL-FRAGMENTS get. Then what is it?
As I was mentioning, I got the "Meatball Hitting" ending when getting all fragments, Fought the Saki, and even Fought a "Meat Ball"(Yes, we both know what that is..).
My SAVE even says [★MISSION MERMAIDEN] afterwards. But regardless, I see no new thing on Any Menus, and the Exclamation Mark persist.
how to unlock the image of milk addiction?
Misinformation on my previous post, Sorry.
You actually need to get caught by the Tripware at 2-1+, That thing will put 'Lactation Bad State' into Hasumi, just let it keep going until you get the Addiction.
