I Married My Female Friend Volume 3, manga books

Tropes

• Ambiguous Feelings
• Childhood Friends
  
• Friends to Lovers
• Slow Burn Romance
• Marriage of Convenience
• Same-Sex Marriage

Kurumi and Ruriko's bond continues to deepen, but their domestic bliss is in for a shake up. When an old friend from Ruriko's past arrives, Kurumi gets to see their no-holds-barred friendship up close. It's not long before something that feels suspiciously like jealousy begins to stir in Kurumi...