The Wrong Way to Use Healing Magic is a manga based on a light novel series. It opens with high schooler Usato, who thinks his life is boring. Well, it's about to get a lot less boring. He's hanging out with the school's council president and vice president (and very aware of how insignificant he is compared to them) when the three of them are suddenly sucked into another world.

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https://otakuusamagazine.com/the-wrong-way-to-use-healing-magic-is-an-isekai-that-mixes-comedy-and-drama/