Rikon Daisakusen! Furin Otto yo, Kubi wo Aratte Matteiro

"I won't forgive him! I'm going to get my compensation!!" I caught my husband, with a smile on his face, going into a hotel with a woman I've never seen before. ON OUR 10th ANNIVERSARY. I can't believe he lied to me, saying something at work came up. Meanwhile he's nonchalantly having an affair... When I was wallowing in despair, my coworker, a divorcee, reached out to help me. Instead of hiring a private investigator, I'll use my coworker's advice and gather proof on my own!! Risque messages, secret hotel rendezvous, social media hints... I'll be a spy and overcome difficult missions to get cold, hard proof of their infidelity, and make them pay!! (Source: MangaPlaza)