It's here, my dear ;D
http://www.mangago.me/read-manga/sekai_wa_kimi_de_mawatteru/bt/199068/Vol1_Ch1/36/
yaoi is life scanslations translated it again and put all 3 parts in this one chapter (because i was also looking for that part, that's why i just reread everything and that's what i noticed so far xD)
You're the best! Thank u!!!
Um..i read the one where makikun sleeps at the rooftop and then fukamchi?? and maki fxxks at the rooftop and want to read it again but cant seem to find it. Can someone please tell me where that part is?