Happy Birthday Cindy~ from the official twitter (link)
quick and rough translation:
Katsura: Shinsaku! Happy birthday! Here’s my present~
Shinsaku: Oh, thanks, Katsura-san. Uh… what’s this weirdly colored liqud? It smells weird too…
Katsura: It’s a supplement drink I put all my heart into creating just for you! Go on, drink it all in one gulp!
Shinsaku: Oh, here I go…. Uu…! What’s this…!!!
Ryouma: Ah, Cindy! Happy birthday! Congratulations~!!
Shinsaku: Ryo… Ryouma~ Thanks for always… you’re… you’re the best friend I could ask for…!
Ryouma: Se-Sensei—! Something’s wrong with Cindy!
Katsura: Fufufu. Shinsaku doesn’t usual let his real feelings show, so this is my gift to him~
Shinsaku: Ryouma~ Katsura-san! I love you both~~!