At Himawari Mansion, an exclusive cafe frequented by stunning individuals, particularly adored by females, one can unlock access to a private chamber for additional attentiveness. Rei, a fervid young lady, happened upon her soulmate during one of her outings, sensing their compatibility in a fleeting touch. However, Sou, the other party involved, appeared nonchalant about the encounter. When Rei eventually musters the courage to profess her feelings, she unexpectedly becomes an uninvited employee.