I'm in Love with the Villainess 5 (ID Comics/Yurihime Comics)

[Machine Translation] Zero Ohashi, an office worker, is reborn as the heroine, Rei Taylor, in the world of the otome game "Revolution. Her favorite heroine is not the princes, but the villainous daughter Claire-Francois! Since Rene was expelled for his involvement in the commoners' movement, Claire tends to be depressed, and Rei wants to cheer her up somehow. One day, Manaria-Sousse, a princess from a neighboring country whom Claire calls "big sister," transfers to the Royal Academy. What does Rei do in the face of the appearance of her biggest rival? This is the fifth volume of this romantic-comedy fantasy series!

乙女ゲーム『Revolution』の世界に、ヒロインのレイ＝テイラーとして転生した社畜OL・大橋零。そんな彼女の推しは攻略対象の王子たち…ではなく、悪役令嬢・クレア＝フランソワだった！平民運動への関与からレーネが追放されて以降、ふさぎ込みがちなクレアと、どうにか元気づけたいレイ。そんなある日、クレアが「お姉様」と呼び慕う隣国の王女・マナリア＝スースが王立学院に転校してくる。最大のライバルの出現に、レイがとった行動とは…。推し一筋のラブコメ・ファンタジー、第5巻！