On the 10th, Seibu announced that Peko-chan, the mascot character from Fujiya who is celebrating her 75th anniversary just like The Lions The Lions, will be present at the game Softbank on April 19th (Belluna D), which is being held as part of the "Lions 75th Anniversary Series," and will be making an appearance at the ceremonial pitch and in-between inning events.

Peko-chan will appear wearing The Lions 75th anniversary uniform. On the day, all attendees except for some seats will be given a "The Lions 75th anniversary uniform" with "Peko-chan" designed on the right sleeve, as well as a "5-grain Milky (The Lions 75th anniversary)" in The Lions original package.

Also, on the 18th, The Lions manager during their golden age, Mr. Mitsuaki Mori, as well as former players Mr. Hironori Ishige, Mr. Yoshitaka Katori, and Mr. Hatsuhiko Tsuji will be visiting the venue to hold a ceremony and talk show. All visitors will receive a BBM card (baseball card) of each of them with a design commemorating the 75th anniversary.