Kaguya-sama: Love Is War 4 (Young Jump Comics)

[Machine Translation] The one who confesses his love is the one who loses! The president of the Shuchiin Academy Student Council, Gyoko Shiragin, and the vice president, Kaguya Shinomiya, meet in the elite Shuchiin Academy Student Council. These two geniuses, who are supposed to be in love with each other, do everything in their daily lives to make each other fall in love and to get the other to confess their love to them. In the fourth volume, Shiragane's younger sister Kei "joins" the battle of romantic brains! And the two main characters engage in a love brain battle with a psychological test, a love bible, a school song, a nervous breakdown, a visit to a friend, the Shuraba, summer vacation plans... and much more!

「恋愛は告白した方が負けなのである!」エリートの集う秀知院学園生徒会で出会った会長・白銀御行と副会長・四宮かぐや…。この両想いであるはずの天才2人が、互いに相手に惚れさせ、相手から告白させようと日常の全てで権謀術数の限りを尽くす、新感覚のラブコメ! 第4巻では、白銀の妹・圭が恋愛頭脳戦に“参戦”!? そして、主人公2人は、心理テスト、恋愛バイブル、校歌、神経衰弱、お見舞い、修羅場、夏休みの予定…ほか多数で恋愛頭脳戦!!