Otoko Shika Inai Kuni no Alice 2 (Birz Comics Lynx Collection)

[Machine Translation] One day, high school student Wataru Arisumi is suddenly transported to a "world where only men exist" and is shocked to find that he is now in a relationship with his former best friend Otate, who was his lover in his former world. On top of that, his occult-loving friend Saeki suggested, "You can get back to the world if you recreate the situation you were in! However, even though she understands the situation in her head, her heart cannot catch up with it, and she becomes more and more exhausted day by day. However, an accident there triggers her to remember the true keyword to return to her former world...?

ある日突然「男しかいない世界」に転移してしまった高校生の有澄渉は、元世界では親友だった大楯と恋人という関係になっていたことにショックを受けていた。その上、元世界と同様のオカルト好きな友人・冴木が提案する「トリップした状況を再現すれば戻れる！」との言葉を信じ、大楯と何度もHをする状況になるも、頭では理解してても心が追いつかない有澄は日に日にやつれてしまい、その様子を心配した大楯は久々に「Hなしで純粋に遊ぼう」と有澄を連れ出す。しかしそこで遭遇した事故がきっかけで、元世界へ戻る真のキーワードを思い出しーー!?