Seku☆Tsuga

Hikari is involved in the nightlife industry and prioritizes financial gain above all else. Seiroudou Dan, a salaryman, requests that Hikari deliver a farewell gift to his departing boss, who had been a regular of Hikari's. When Hikari attempts to meet with Seiroudou to collect payment, their encounter escalates into a passionate encounter. Though Hikari sees little significance in the event, Seiroudou, who takes the situation seriously, becomes determined to marry her.