Goodbye! I'm Being Reincarnated! Series by Kenji Saito, Parabora

High-school teen Yuya Kamigasaki lives a perfectly average life, when he isn't dropping in uninvited on his big-breasted friend next door. One day, a magical circle appears in his room, revealing Angelia, a princess from another world who offers to "reincarnate" him into the greatest hero that ever lived. This would-be hero's life is about to get a lot less boring and a whole lot more dangerous!

"Welcome to Phatulia... Great Hero." Ange, princess from another world, has come to Earth to "reincarnate" hapless teen Yuya, so he can become the hero he's destined to be. Unfortunately, the only way to trigger this is to kill him -- and after a pitched battle, her blade has penetrated his heart! Is this the end of high-school life and the start of a breathtaking new legend, or...?

Ange has just dropped a bombshell revelation--if she can't reincarnate the Great Hero by the next new moon, she'll lose her own life! That unavoidable deadline only serves to further steel her resolve, but how will Yuya react to this unbelievable confession...?

It's the Great Hero (and the monsters that back him up) versus the princess of another world! With Ange on the offensive, the final battle is about to kick off. If Yuya is reincarnated, it's all over -- but if he isn't, Ange dies. The situation seems hopeless, but can the Great Hero step up and find a way to save this otherworldly princess?! It's the shocking final volume of this other-world fantasy where, for a change, nobody has to get reincarnated after all!