I'll See You in My Aquarium
Kuranosuke learns Shū is planning to redevelop the Amamizukan into a hotel in two years time, though is surprised that none of the residents are too bothered. Kuranosuke decides to accompany Tsukimi to an aquarium and dresses her up again, convincing Shū to accompany them. As Tsukimi becomes fascinated by the jellyfish, Kuranosuke gets strange feelings from looking at Tsukimi. After changing into his male wear, he finds Tsukimi being embraced by Shū as she was crying from remembering her mother and feels jealous. After Tsukimi gets over it, she soon gets embarrassed over the hug. When she returns, she finds the resident manga author, Juon Meijiro, only has a week until her next deadline so the others have to rush to ink pages. However, she loses her concentration following Shū seeing her in her tank top. Meanwhile, Kuranosuke is disturbed to find Shū is still a virgin.
Aired 12/11/2010EP 4 - I'll See You in My Aquarium

Princess Jellyfish
Plain, timid and obsessed with jellyfish, Tsukimi is a far cry from her idea of a princess. Her tepid life as a jobless illustrator comes complete with roommates who harbor diehard hobbies that solidify their status as hopeless social rejects. These wallflowers run a tight, nun-like ship, but their no-men-allowed-not-no-one-not-no-how bubble is unwittingly burst after Tsukimi brings home a rescued sea jelly and a beauty queen... who's actually a guy.
When the threat of losing their cozy convent inspires this glamour boy to turn the neurotic entourage into a portrait of success, will Tsukimi take her chance to bloom, or will she end up a hot mess?
(Source: Funimation)