Keitaro had just eaten breakfast and was walking around looking for the other tenants of the dorm. For some reason he couldn't find any of them. He walks back to his room and picks up his notebook to start studying. He thinks to himself 'where is everyone' he sighs and looks at his calendar then his watch. He says to himself "I wonder if they forgot what today is" It was his birthday today. He got up and walked to the hot springs thinking 'well no one's here so ill use the actual springs for once.' he walks into the springs and relaxes as he sits in the water. He lays back and he's barely visible in the water.
As the door slides open Kietaro doesn't notice and Naru walks in wearing nothing. She sits in the water and says "ahhh just what I needed today a warm bath after going to the store with everyone else hmm wonder where Keitaro is" as she says these things Keitaro notices her and quickly goes under water and thinks' damn I thought they weren't here ok just got to sneak out of here' he starts swimming away and comes face to face with one of Su's mecha-tama. He stays completely still as it trains its gun on him. He then quickly jumps up above water and is now face to face with Naru along with the other girls beginning to enter the hot springs. Naru looks at him angrily and kicks him through the spring's entrance. He gets up and runs as he is chased by Su on a mecha-tama Motoko with her sword Mitsune with a bottle Naru with her fists and Shinobu starts to run away crying. Naru screams "Keitaro you perverted idiot!" and Motoko says "Keitaro you made Shinobu cry again we'll kill you!"
They keep chasing him through the dorm until they reach the roof. Keitaro is cornered and is on his knees saying "I'm sorry it was an accident I was just trying to relax!" Motoko has her sword at his neck and asks "why were you in the hot springs anyway you're not allowed in there!" Keitaro replies with "I thought you guys were gone and was just going to relax in the actual hot spring instead of the barrel" Naru walks up and punches him off the roof and screams "you idiot stay out of the hot spring!" as he's punched off mecha-tama bombards him with missiles. After he returns to his room he thinks 'god so they really did forget' He gets a few band aids and puts them on his cuts. He goes outside getting hatred looks as he passes everyone. After he leaves he goes to town to get a small cake for himself. Back at the dorm Naru thinks to herself 'I guess I'm the only one who remembered after all I wish I had been a little nicer to him' she walks to Motoko's room and knocks. The door opens with Motoko wielding her sword in one hand from training. "Yes" Naru says "I have a question to ask you. Do you know if something special happens today? Motoko says back "no it's just a normal day today..."
Naru walks off before she finishes and thinks 'why are they so inconsiderate of him?' Keitaro enters the dorm with the cake in a bag and starts to walk to his room. Su tackles him and says "what's in the bag you perverted idiot" Keitaro says back "something I bought for me" Su says "don't be an inconsiderate person Keitaro share!" she starts tugging on the bag as she tries to steal it from him. The commotion brings Motoko into the room "Alright what's going on in here!" she looks at Keitaro and says "Keitaro haven't you gotten in enough trouble today." He lets go of the bag as everyone else except for Naru come in and he yells "all of you just leave me alone today!" he walks past everyone and up to his room with them looking shocked. Mitsune says "What's up with him today. Hey what's in the bag?" Motoko replies "Keitaro brought it home with him he said it was for himself. let's see what's in it." they open the bag and open it to see a smashed cake with the words 'happy birthday' on it and Motoko says "guys we really screwed up this time"
Keitaro walks up to the roof instead of his room so he can hopefully be alone. He sits at the railing staring out as the sun starts to set. He sighs and says to himself "well this is officially the worst birthday ever" a voice from behind says "well anything I can do to make it better. he looks behind him to see Naru walking to him and sitting next to him and she says "I'm sorry for hitting you earlier are you ok" Keitaro replies" it's ok did you remember or did you hear me say it?" she says back" I remembered no one else did." she suddenly takes his glasses "Naru give those back!" she runs around the roof with him chasing her for his glasses. He trips and falls and he accidentally tackles her to the ground. He says "give those back" she replies 'l-let me go and I will" "j-just give them back" "s-stop your too close" "b-but my glasses" as this goes on their faces get closer "y-your to close Keitaro" "n-no you're the one that's to close Naru" They continue and their lips are right at each other's almost touching.