You can read this manga on Futekiya: https://read.futekiya.com/comic/5fd89a4192f94
I talked about this manga before on my podcast briefly on episode 32, but I decided to read it again on Futekiya and to give a full review. 
Every day, Mizuki takes the train to school. And every day, almost like clockwork, a certain man has his hands all over him. It's an unusual routine that he's almost getting used to, but what will he do when one day, the man promises him more? Is it really worth following him?
Very erotic, complex relationship story. I did find it an interesting read. There are some uncomfortable subjects matter in this story. 
Read official Bl Titles on Futekiya: read.futekiya.com

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Please read my featured article: Boy Love (Yaoi) Manga Recommendation to Buy at CDJapan featured on CD Japan website: https://www.cdjapan.co.jp/feature/Boy_Love_Yaoi_Manga_Recommendation_to_Buy_at_CDJapan