Ore no Koigataki ga Inu Deshite
オレの恋敵が犬でして
Ryo, a college student who is not fond of dogs, moves in with his older girlfriend, Harumi. Upon entering her home, he discovers her dog, Kotetsu, is also living there. To his surprise, Kotetsu competes with Ryo for Harumi's affection, leading to a humorous situation where a human and a dog vie for the same romantic relationship. The story explores this unusual dynamic as the three share a living space.