11 titles recommended if you like Ao-chan Can't Study!
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Rent-a-Girlfriend
We Never Learn: BOKUBEN
My Girlfriend Is Shobitch
To Love Ru
My First Girlfriend Is a Gal
Uzaki-chan Wants to Hang Out!
Aharen-san wa Hakarenai
Seduced by My Best Friend
The 100 Girlfriends Who Really, Really, Really, Really, REALLY Love You
SHIMONETA: A Boring World Where the Concept of Dirty Jokes Doesn't Exist