Beast Darling!: Kemomimi Danshi to Himitsu no Ryou

Five teenage boys carry a beast curse that manifests as animal features—ears, tails, behavioral changes drawn from whatever creature they're bound to. The heroine has an ability she doesn't fully understand that can help each of them learn to control it. The closer she gets to them, the more she learns about her own power—and about something hidden within herself that none of them expected to find.