世界か彼女か選べない (Series) favorite_border

[DeepL Translation - needs review] Volume 1 Introduction: Mitsuki Nakagawa decides to confess his feelings to his beloved childhood friend Ayumi Fujisaki. However, he is interrupted by a mysterious beautiful girl, Hikari Kando. If you confess to her, the world will be destroyed, okay?" Kando reveals Ayumi's secret. And in order to make her give up her feelings for Ayumi, Kando takes a ...... erotic trick!　The world or her? The "ultimate choice" romantic comedy begins!

(Translator: DeepL)