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...!
Thanks. All right.
Danke!
Gracias. Qué bien.
Gracias. Qué bien.
Merci.
Grazie.
Obrigado. Viva!
Спасибо. Здорово.