Adachi and Kurosawa have their first Valentine's Day together! Kurosawa recalls the previous Valentine's Day before he and Adachi got to know each other... This year he plans to give him chocolate, but he discovers some chocolate in Adachi's desk from an unknown sender! Who in the office gave Adachi chocolate...? Kurosawa's internal monologue is on full display as the couple spends Valentine's Day together!

Detective Rokkaku is on the case! Though Rokkaku respects both Adachi and Kurosawa, he finds their relationship suspicious. Kurosawa always interrupts when he's talking to Adachi and seems to know all of Adachi's preferences... Curious about the closeness of their relationship, Rokkaku plans a special strategy. Eventually he arrives at a conclusion that nobody sees coming...!
Oh, right. I wanted to discuss the materials 
for next week's conference.
Ach ja, was die Konferenz
nächste Woche angeht …
Quería hablarte
de los materiales de la conferencia.
Quería hablarte
de los materiales de la conferencia.
Ah oui, ce sont les dossiers
pour la réunion…
Oh, giusto. Volevo discutere del materiale
per la conferenza di settimana prossima.
Ah, eu queria discutir sobre os materiais
para a conferência da próxima semana.
Слушай, я хотел обсудить конференцию
на следующей неделе.