Slimamander in Yo-kai Watch 2

#Accept the quest Seal No Evil, which is located in Shopper's Row (it should be outside of the Everymart). If the quest isn't there, then you may have to rank up your watch to at least Rank B, or you may also need to complete the Ghost Club at School quest. You do not have to complete the game or have entered the Infinite Inferno to activate this quest. This quest is exclusive to Bony Spirits only. #Go to where you are supposed to (which is right outside of the school, where you first fought him) for the quest, and save right before you fight Slimamander. #Try bringing a Superstar Soul or a Yo-kai with the Popularity ability (Shmoopie, Cupistol, etc.). Even though he is a boss, it can slightly increase your chances of befriending him. # If you don't get him the first time, soft reset the game, and continue fighting him until his dialogue changes after fighting him and you get his medal. Unlike other Yo-kai he will befriend you judging on how well you battled, for example if you keep needing to heal every turn then he probably won't befriend you. It is recommended to try with at least a level 30 to 35 team. He won't approach you and instead talk to you before giving his medal.

Version exclusive: Yo-kai Watch 2 Bony Spirits.