It seemed like a manga centered about sex and a bit of comedy but it soon turned into a dark, wholesome story specially after learning about their backstories. Good plot.
Wish there was more! Ongoing vol2 There’s an extra/sequel chapter
Ch4.5 Hiyo-chan Koi wo Suru?
No plot. Ch5 is cute.
Narrow - extra
Boku no Osekkai Darling