from my personal experience roughly 50-60% of the game has been quite boring, without any dept, or meaning. bonus route, as well as the normal routes of the other chicks were frankly speaking KRAP & the sole reason i played it was for amis sake, which i definitely wont regret, since shes ami, you know.
edit: those minigames with the pet were gruesome, cause nearly everytime they occured my emulator went into slow-motion & the sounds .......