The ending theme. Notice the arms, especially those with Akihisa.
In episode 3 Yoshii is running away from a jealous Psycho Lesbian with a plate of crepes. He runs into a Straight Gay character named Kubo, the crepes go on the guy's face, and Yuuji's head goes into his lap. Yoshii, still pursued, runs off, and Kubo says quietly "Yoshii...you've dirtied my face." Then he licks up some of the cream.
Earlier in that same episode Yoshii and Kubo had another Crash into Hello causing a piece of bread Kubo had in his mouth to fall to the ground. Yoshii asks if he can eat it, saying he doesn't mind if it's been on the ground leading Kubo to blush, breathe heavily and think excitedly that it would be kind of like sharing a kiss with Yoshii.
Basically any time Kubo shows up he will exhibit some Ho Yay towards Yoshii.
In regards to the Les Yay, Psycho Lesbian Miharu is in love with Minami and her solution with anyone who gets between her and Minami is to ''remove'' the problem.
Hideyoshi is so pretty that he is thought of as a girl by all of his classmates. Both Yoshii and Tsuchiya and a decent proportion of the male fans express a lot of Ho Yay towards him, pretending/believing that he's a pretty girl so they can ogle him.
In Episode 8 a malfunction of the Being system leads to a quite... interesting scene between Yuuji's and Kouta's summon. It doesn't help that both of them have been turned into Bishōnen.
And in Episode 9, we have the Yuuji-Akihisa combo from the first episode... and it's back with twice the implications and triple the dose!
There's so much Ho Yay, even Minami and Mizuki pick up on it. When Akihisa brings a bento to school, their first thoughts are as follows:
Mizuki: This is beautiful... Either Sakamoto or Tsuchiya made it for sure.
Minami: Fess up.
The OVA has Akihisa crossdressing as a maid to get back at two students that were dissing their Maid Cafe. Akihisa acts as the victim to their "sexual harassment" while Yuuji plays hero. After Akihisa put a bra on one of their heads, he hides behind Yuuji.
In the same episode before that moment, when these two students were threatening Akihisa with violence, Yuuji comes in between the two guys and protects him by knocking them out.
Finally at the end of the episode, Yuuji is the only one that praises Akihisa for attracting many customers when he was in the maid outfit. Akihisa is not impressed.
There's a short Christmas Episode in which the various characters explain what Christmas means to them. The girls all talk about wanting to spend time (eat cake, exchange gifts, etc.) with a boy they like, with accompanying visuals of each one meeting and kissing a nondescript male figure in a festively-decorated snow-covered park. Akihisa's bit has him do the same thing, including kissing the same obviously-male figure, with a voiceover talking about how Christmas is an important day for couples. (Possibly making it funnier is that the generic guy, at a distance, resembles the aforementioned Kubo.) Hideyoshi is also shown in the same situation.