[Demon Slayer Giren] After the Breakup, the Two Purgatory Crossed Each Other

Two male protagonists, an atypical ABO setting, and a systematic modern purgatory. Cp is Demon Slayer Academy Uren, the Taisho Era Yiren, probably Under revision. . . * After a fierce quarrel, Purgatory Xingjulang and Yusui Tianyuan broke up. In extreme sadness, Purgatory Anjuro fainted at the crossroads because of his estrus. When he woke up, he found that he had arrived in the Taisho era, and Tomioka Yoshiyu had marked him! Purgatory Anjuro:! Tomioka Giyu:? The secret of hiding in the dark: Hiding merit and fame. —— Yusui Tianyuan and Purgatory Xingjulang broke up. After all, he didn't seek out Purgatory to get back together in the first place, but he always secretly cared about each other like a coward. Purgatory is still the same, sunny and cheerful, enthusiastic and upright, and my appetite seems to be better, as if it is not affected by the loss of love at all. On this day, Yu Sui Tianyuan couldn't bear it anymore. He stopped Purgatory when school was over, sniffed greedily into his neck, and kept saying "I'm sorry", but was pushed away by Purgatory. "What are you doing? Yu Xu!" Touching Purgatory's puzzled eyes that implied reproach, Yusui Tianyuan opened his mouth, but only said: "Purgatory, where are your glands?" Concept: sweet and sour love