Regarding the WEB-DL 72 episode, it's possible that it might be a fan-made or unofficial upload. If you could provide more context or clarify what you're looking for, I'd be happy to help.
Notice: No "72," no dangling ellipsis.
"Boku ni Harem Sefure ga Dekita Riyuu" translates to "The Reason I Have a Girlfriend Is Because of You" in English. This title hints at a romantic or comedic storyline possibly involving misunderstandings, unrequited love, or an unexpected development in relationships.