When You Talk About Summer It's Probably This

is chapter 21 of the Beelzebub manga.

Summary
Summer vacation has arrived. From southern Japan, Takayuki is resting next to a pool in a resort. He narrates that he came with his family to the resort and to get away from Tatsumi and the deliquents around town back home. Takayuki walks up to the pool to find two girls waving at him, narrating that the chapter will focus on his finding of love. Suddenly, he finds Alaindelon floating behind them. Shocked at his presence, Takayuki tries to run away, but Alaindelon manages to catch up and capture him with his body. Takayuki takes back what he just narrated.

Alaindelon opens himself for Takayuki to find Tatsumi standing in front of him, happily inviting him to the public pool. At the entrance, Takayuki buys their tickets to use the pool at his own expense in front of an impatient Tatsumi. Inside, Takayuki, annoyed at the crowdedness of the pool, the torture he is feeling. Tatsumi claims he thinks of the pool when he talks about summer. Takayuki agrees, but questions him on why he was brought to a crowded, steam-bath like public pool when he could be sitting on the pool side of a five-star resort. Tatsumi bluntly answers that he wanted to see him and his sad face. Tatsumi recalls having went over to his house, under repair, to find everyone gone on vacation, to which he realized there exists an unfair social gap between the classes of society. Finding Alaindelon next to him, Tatsumi asks him to find Takayuki and bring him back from his vacation. Alaindelon obliged. Takayuki reminds Tatsumi that he could’ve came to the resort with him instead, to which Tatsumi is under shock for not realizing what he could’ve done.

At a nearby vending machine, Takayuki is buying a 7-Up and contemplating the chaos ensuing since Beelzebub came to them, as well as why Hilda isn’t around. Suddenly, he spots Chiaki and Nene beside him. Nene recognizes him with hostility, to which Takayuki feels lucky they’re around. At a table next to Chiaki, Nene wonders why Takayuki is sitting with them uninvited. Takayuki tries to start a light conversation with them and wonders where Aoi is. Nene replies that Aoi went to train, to re-discipline herself, but not to become a bride as Takayuki thinks. Elsewhere, Aoi is seen just about to begin training. Nene recalls her faction getting degraded since Tatsumi came and Aoi quit. She asks Takayuki where Tatsumi is. Takayuki stands up and points that he’s spaced out in the pool on a float and offers to call him over. Nene rejects this and declares that the Ladies Redtail Group still does not approve of him and Tatsumi. Ignoring his rejection, Takayuki sits again and tries to continue the light conversation, offering Nene a snow cone to her displeasure. Suddenly a large group of teenagers appear from behind him. Takashima, their leader, greets Takayuki and demands he introduce him to Nene and Chiaki. Nene asks if they’re his friends, to which Takayuki replies they were classmates with him in middle school. Offended, Takashima demands a better introduction while his underlings begin harassing Nene and Chiaki. Suddenly, Takayuki splashes Takashima's face with his 7-Up, claiming that it’s a little hot out for him. Tatsumi is still spaced out at in the pool.

Characters in order of appearance

 * 1) Takayuki Furuichi
 * 2) Alaindelon
 * 3) Tatsumi Oga
 * 4) Beelzebub
 * 5) Chiaki Tanimura
 * 6) Nene Ōmori
 * 7) Aoi Kunieda
 * 8) Takashima