Ch.1-3.5: After dying in an accident, ghost Natsume appears to Tomoki and asks him to confess to Yabuuchi for him. However, Tomoki has feelings for Yabuuchi too
Ch.4: Igarashi realized his feelings for Shinohara, when he resigned after they went drinking. When they meet again 6 months later, Igarashi tries to win over Shinohara
Ch.5-6: Cousins Aruto and Michiru were raised like brothers and are often mistaken as twins. However, their relationship has become awkward, due to some miscommunication
Koisuru Cupid