|| Original Air Date
|| "It'll Always Be 10 Years Too Early for You!" (いつだって10年早いんだよ!)
|| While the girls introduce themselves and get to know each other, their teacher, a rabbit who calls himself Center, tells the girls that if they want to graduate that they need to win 100 medals throughout their studies. He then gives the girl's their first assignment: To go into the game Virtua Fighter.
|| "Connect Your Passions into a Combo" (コンボでつなげ 熱い気持ち)
||The girls must win 100 fights in a row if they want to pass this assignment. After defeating Akira Yuki, the girls end up fighting more Virtua Fighter characters as well as characters from other SEGA franchises such as Golden Axe, Alex Kidd, Flicky, and even a giant beetle that culminates in a match against Sakura Shinguji from Sakura Wars. All opponents fall victim to Dreamcast's headbutt. In the end only Saturn gets the five medals because Mega Drive was knocked out and Dreamcast was disqualified for finishing matches before the fights actually began.
|| "Up, Down, Left, Right, and Occasionally, Up Diagonal" (アップ、ダウン、レフト、ライト、たまにナナメ上)
||The girls discuss what they might do after graduating and end up talking about Saturn's future romances then imitate being weather forecasters. When they go to see what their next assignment is they find out they have to go into the game Space Channel 5 to save Center's friends while also earning medals. Mega Drive resents this because she has no dancing skills.
|| "We Tried to Dance Space Channel 5" (【セハガール】スペースチャンネル5【踊ってみた】)
||The girls meet up with Ulala and proceed to help her out with stopping the Morolians. When various things drop their ratings Dreamcast puts Saturn in a swimsuit because her sex appeal would make their ratings rise. Center's friends end up being Jeffery from Virtua Fighter and Gilius Thunderhead from Golden Axe. When they get to the end of the game and are rapidly losing ratings Saturn gets out her Twin Sticks and finishes the job. In the end only Mega Drive and Dreamcast get medals because the Space PTA complained about Saturn using sex appeal for ratings.
|| "Puyo + Puyo + Puyo + Puyo = 0" (ぷよ+ぷよ+ぷよ+ぷよ=0)
||While talking about pets the girls are then tasked by Center to come up with new game ideas by incorporating puyo into them. Good ideas gain medals and bad ideas lose them medals. Mega Drive and Dreamcast come up with Fantasy Zone and Fantasy Zone II clones that earn them medals while Saturn loses one for a puyo fighting game. Mega Drive and Dreamcast then come up with Phantasy Star Online 2 and ROOMMANIA#203 clones that net them more medals while Saturn loses another one. In the end Saturn comes up with a Puyo Puyo Waterslide game that gets her back a medal she lost.
|| "Center-sensei's Center Exam" (センター先生のセンター試験)
||The girls take their first exam! They go into the game Border Break to get more medals than usual and all is going fine until they get to the enemy core. When they are about to destroy it they find out that someone is hacking them. Center tries to save them but is to late. Dr. Eggman comes down from the sky and they guess that he must be the hacker. He then shrinks them down (Saturn referencing Woody Pop) and sends an army after them but Sonic the Hedgehog appears!
|| "Eggman vs. Sonic with the Sega Hard Girls" (エッグマンvsソニックwithセガ・ハード・ガールズ)
||Sonic beats the robots that were sent after the girls and they hitch a ride on his quills. They go though the games of Sonic the Hedgehog and Sonic Adventure before catching up with Eggman. Dreamcast falls off Sonic, which leads to Sonic trying to save her and getting beaten instead. Back in the Border Break world, Mega Drive conjures up an invincibility monitor for Sonic to use that he defeats Eggman with. During all this the enemy core is destroyed and the girls go back while winning the game. Upon their return, Center is apparently still hacked and they almost find out who he is. They are then awarded their medals.
|| "Shine! The 54th! Shock to the Brain! No Spillage, But We'll Destroy the Barriers of Spillage-obsessed Youth! Sehagaga Academy Culture Festival!" (輝け!第54回!脳天直撃!ポロリはないけどポロリ青春 限界のバリアを打ち破れ!セハガガ学園文化祭!)
||The school's annual culture festival is coming up and the girls have to figure out what they want to do for it because whoever wins gets medals. While browsing the other contestants they talk about their various competition (who are actually other Sega Hard Girls), who among them is Caroline Powell from the Dynamite Deka series as well as other girls from various Sega franchises. In the end the girls lose to Bongo from Congo Bongo due to the ape being “nude”.
|| "Weapon Enhancement Succeeds at a 50% Rate, but It Sure Feels Like 15% to Me" (武器強化の成功率50%、体感では15%説)
||The girls are tasked to go into the game Chain Chronicle and retrieve Spirit Stones for medals. However when they find out they have to go through a phone they state their distaste for it. Once in the game they beat their first enemy and get a Spirit Stone. After this they try to recruit people from the tavern, which include faces such as Robo and Mobo, Holmes, and Mint-kun, among others. With no luck they decide to go off on their own again and end up getting another Spirit Stone just as the phone dies meaning the second one didn’t count in the end.
|| "Broken Jet Set Radio" (壊れかけのジェットセットラジオ)
||The girls are tasked with going into the game Jet Set Radio. If they do a cool trick they’ll get medals. Whoever wins the race and graffitis what they want for the future at the end of it gets even more medals! When the girls first get into the game they end up taking pictures at a photo booth and then Mega Drive gets training skates because she’s not very good. In the end, Dreamcast wins, and her wish was that they would all be together forever.
|| "Dream Rappy, Saturn Rappy, Mega Rappy, ?? Rappy" (ドリラッピー, サタラッピー, メガラッピー, ??ラッピー)
||The girls are tasked with two games: Phantasy Star Online 2 and Shining Force Cross Exlesia Zenith. They question how they will go into two games at once (while referencing Doki Doki Penguin Land) and they are told they will go into Shining Force using Phantasy Star Online 2 costumes. Once in game they get Rappy costumes and mess around a little (while referencing Altered Beast) before confronting a dragon. They try to beat it and Dreamcast gets sent flying. Saturn and Mega Drive try to beat it to no avail before a sword wielding Rappy comes in and single-handedly beats the boss. It turns out it was an actual Rappy that defeated the boss and it is shown that Dreamcast was flung to an even harder foe.
|| "I Heard We're Graduating Sehaga" (セハガ, 卒業するんだってよ)
||A person called Black Asobin hacks their network and steals all of the girl's medals while only leaving Saturn with one. He invites them to challenge him in his world, Black Asobin World. While here, they climb his tower doing various challenges and end up at the top where he challenges them in Space Harrier. Saturn is the only one who can go in and save the day. Once Black Asobin is defeated it is revealed that it was Center all along. He says that this was their graduation test and that even in the Border Break world that the "hacking" was his doing. He gives the girls their medals back plus the ones they earned but Saturn is a few short. Mega Drive and Dreamcast give Saturn their extra medals so that they all have 100. They then prepare to graduate.
|| "We'll Always Be Connected!" (いつだって, つながってますから!)
||The girls learn that graduating means that they will cease to exist in their current forms as they are just apart of the imagination of their creators at Sega. They will instead be reborn as consoles in the real world to be loved by all. They say their goodbyes and Mega Drive is the first to leave. Once she is gone Saturn and Dreamcast have a little talk before she too, has to leave. With Dreamcast all alone she wonders if she will be a good console but gets encouragement from various Sega characters they met along their journey. Reassured, Dreamcast leaves while saying that she will always be connected to everyone. During the credits, a father gives his son a Dreamcast at home and they play it. The episode ends with a "GAME OVER" in the Sega font with a cursor stuck in-between the "Yes" and "No" of a "Continue?" prompt.