Tonari no Seki ni Natta Bishoujo ga Horesaseyou to Karakattekuru ga Itsunomanika Kaeriuchi ni Shiteita - Vol. 4 Ch. 20

[MangaDex]

 

[Xopnek]

Haven't read this shit since it got paywalled

 

[Procot]

I don't understand this story and can't re-read this because i have to pay for it...