Quote from Remee1cutie
Is its a oneshot hentai called Worrysome girl! Here's the description
Plot: Takana always worries about his classmate Nako Nekura, who has a creepy aura around her. Until he finds her inside of his locker.
Ive never read it my friend said itt might be so check it out
the OP already said it's not Worrisome Girl when it was suggested on the first page.