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One-sided Love Triangle | Ruka Kirato | Renta! - Official digital-manga store
English teacher Riko and school nurse Kyousuke are a couple who've been living together for about a year. One day, Kyousuke's cousin comes back to Japan after studying overseas, and moves in with them. While the situation makes Riko uncomfortable, she can't bring herself to complain when she sees how much Kyousuke adores him... On the day of his cousin's arrival, Kyousuke gets caught up at work and it falls to Riko to meet him. To her astonishment... it's Mizuki, a student she tutored in her college days, who once professed his feelings for her...! Shaken, Riko pretends she's forgotten about the incident... but Mizuki has other plans in mind...!