Other

Tranmigrating to a mashup anime world, Tatsuma obtains the Trait System. With it, he can acquire traits from a target by defeating them.
    [Congratulations on successfully defeating Issei Hyoudou.]
    [Boost: When activated, strength boosts once every ten seconds. The Boost limit is affected by physical ability.]
    [Congratulations on successfully defeating Yuji Itadori.]
    [Athlete: Training effect +300%, more likely to trigger Black Flash in combat.]
    [Congratulations on successfully defeating Siegfried.]
    [Demon Sword Controller: Swordsmanship Talent +1000%, can use any sword regardless of conditions, physical stats slightly increased when holding a sword.]
    Additionally, new functions are unlocked each time his strength reaches a new level.
    [Ding! Host's strength has broken through to Level 2, unlocking the trait upgrade function!]
    [Ding! Host's strength has broken through to Level 3, unlocking...]