Nitori no Doushitsu Nikki・4 Gatsu

 (似鳥の同室日記・4月 Nitori no Dōshitsu Nikki - 4 Gatsu) is the second track of the drama CD Iwatobi High School Swim Club's Activity Log 2. It was released on September 25, 2013.

Translation
Nitori ：“Nitori’s Roommate Diary, April.”

Nitori ：[writing] I moved into my dorm room today, on order of Captain Mikoshiba. My new roommate is Matsuoka-senpai. I heard he studied abroad in Australia for swimming. I’ve seen Matsuoka-senpai swim before in a tournament for elementary school. The relay back then was so wonderful! Now I’m sharing a room with my role model… I’m so glad I joined Samezuka’s swim club! I hope I get to learn a lot from him… Ah, but there’s one problem. For the bunk beds in the dorm rooms… Which of us will take the top and bottom? Since he’s my senpai, he should be top, right? But whoever sleeps on top will have to climb up the ladder. I don’t know if I should let my senpai take the trouble… But the idea of me sleeping on top of Matsuoka-senpai seems kind of rude… What should I do?

[Rin enters the room] Nitori ：Ah! Matsuoka-senpai! I’ll be your roommate starting today! I’m Nitori Ai’ichirou! It’s nice to meet you! Rin ：Yeah. Nitori ：U–Um! Rin ：What? Nitori ：Ma–Matsuoka-senpai! Top or bottom… which do you prefer? Rin ：HUH?! Nitori ：Um… so… top or bottom… Rin ：HUHHHH?! Nitori ：The bed… Rin ：Ah… Tch. ……Bottom. Nitori ：Okay!

Nitori ：[writing] Matsuoka-senpai likes the bottom.