As Tsuna runs to class, he spots Yamamoto and Gokudera arguing. As Tsuna approaches the two, they suddenly leave and Tsuna notes the weird behavior of the others too. He then realizes that tomorrow is his birthday and Reborn appears to tell him that they're planning a party for him, causing Tsuna to be happy. Later that day, Tsuna heads home, planning to pretend surprise for the next day but ends up being surprised himself when he finds out that the birthday party is for Reborn and that everyone forgot about his own birthday.
As the party progresses, Reborn announces the start of the Vongolian Birthday Party, a party celebrated during the odd years where the celebrant is to give scores to the participants' presents or performances. The highest scorer gains an elegant prize while the lowest is killed, much to Tsuna's dismay. As the participants give their presents and performances to Reborn, Tsuna starts to panic since he does not have a gift for Reborn. When Reborn demands Tsuna to perform, Gokudera tells Tsuna to team up with him and perform a magic show.
With Tsuna inside a box, Gokudera tries to start stabbing it with his swords causing Tsuna to panic until Reborn shoots him with a Dying Will Bullet. Tsuna destroys the box and grabs the swords and starts to stab the box by himself. With his dying will, he easily dodges all the swords and gains 100 points. However, when the Dying Will Bullet loses effect, Tsuna's body begins to hurt and he ends up celebrating his birthday in the hospital.
Note: Bold + Italicized = First Appearance
- Katekyō Hitman Reborn! was featured on the front cover of the issue of Weekly Shōnen Jump this chapter was released in.